Perhaps you should try some spelling variations:
theo trieu » theo tieu, theo chieu, thep tieu
hanh tranh » canh tranh, hanh trinh, hanh trang
luan nang » luan van, luan san
van nang » van quang, van ban, van dong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

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