mysql php upload form problem

Hi, I have a search feature already set up on my website: www.artfull1.com. It searches a mysql data base using PHP. I upload my images, url, keywords via a form created by a coder from rent a coder...... but unfortunately the upload form is no longer allowing me to add more images or keywords to the database. i currently only have around 500 small images in the form but now it will not add any more to the database... I basically need someone to fix this problem and also edit the code for the search page so that the results are more accurate....... so that when some one searches with multiple words such as " green flower" i want it to display only images that are relevant to both keywords...... it currently displays all images related to the keyword "green" and "flower".? Feel free to take a look at the search feature here: www.artfull1.com.