Perhaps you should try some spelling variations:
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
van nang » van quang, van dong, van dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
va nang » da nang, cam nang, kha nang

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

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