Perhaps you should try some spelling variations:
dung tuong » dung thuong, dung truong, dung trong
tuong tham » luong tham, tuong tac, trong thai
hieu lang » chieu sang, hieu quang, nhieu tang
van thanh » ban thanh, van tuan
tran xuan » tran quang, tran van
tham toan » pham toan, tam toan, thuat toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((van thanh) or (tran xuan)) dung tuong tham toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((van thanh) OR (tran xuan)) dung tuong tham toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((van thanh) or (tran xuan)) dung tuong tham toan ban*.