Perhaps you should try some spelling variations:
hanh tang » hanh trang, hanh mang, hanh tung
luan hang » luan nang, luan han, luan hung
hang cong » dang cong, hang nong, bang cong
theo yeu » theo tieu, thiet yeu, theo chu
yeu tinh » yeu tin, lieu tinh, kieu tinh
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban

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 tang) or (anh tang)) luan hang cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo yeu tinh - ((hanh tang) OR (anh tang)) luan hang cong dan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo yeu tinh - ((hanh tang) or (anh tang)) luan hang cong dan ((toan cao) or (toan tap))*.