Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
theo chu » theo chieu, cho chu, chao chu
theo yeu » theo tieu, thiet yeu
anh tang » anh bang, anh dang, anh nang
toan cau » 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 chu) or (theo yeu)) tinh - ((hanh tung) or (anh tang)) luan nang cong vang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (theo yeu)) tinh - ((hanh tung) OR (anh tang)) luan nang cong vang toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (theo yeu)) tinh - ((hanh tung) or (anh tang)) luan nang cong vang toan cau*.