Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
hanh mang » nhanh mang, hanh trang, nhanh lang
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
theo yeu » theo tieu, thiet yeu, theo chu
yeu tinh » yeu tin, lieu tinh, kieu tinh
anh dang » anh dong, anh dung, anh bang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 yeu tinh - ((((hanh tung) or (hanh mang))) or (anh dang)) luan nang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo yeu tinh - ((((hanh tung) OR (hanh mang))) OR (anh dang)) luan nang cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo yeu tinh - ((((hanh tung) or (hanh mang))) or (anh dang)) luan nang cong dan toan cau*.