Perhaps you should try some spelling variations:
thiet yeu » thiet ke, theo yeu
yeu quang » hieu quang, vu quang, le quang
hanh tang » hanh trang, anh tang, hanh mang
dung sinh » duong sinh, dang sinh, dung ninh
tang cua » mang cua, hang cua, tang luan
toan ban » van ban
cua ung » cua rung, cua ong, cua nhung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thiet yeu quang - hanh tang cua ung dung sinh ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thiet yeu quang - hanh tang cua ung dung sinh ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: thiet yeu quang - hanh tang cua ung dung sinh ((toan tap) or (toan ban))*.