Perhaps you should try some spelling variations:
theo lieu » theo tieu, theo chieu, theo yeu
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan nang » luan van, van nang, luan san
dong tac » dong tai, dong bac, dong tam
cong tac » cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo lieu tinh - hanh tang luan nang ((dong tac) or (cong tac)) ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo lieu tinh - hanh tang luan nang ((dong tac) OR (cong tac)) ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo lieu tinh - hanh tang luan nang ((dong tac) or (cong tac)) ((toan ban) or (van ban))*.