Perhaps you should try some spelling variations:
thanh tung » thanh cong
pham nhung » tham nhung, pha nhung, pham hung
tung pham » hung pham, nhung pham, trung phan
theo kha » theo phap, thao khoa, theo chu
kha nang » phap nang, ky nang, ki nang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
toan cao » toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo kha nang - thanh tung pham nhung ((cong dan) OR (cong tan)) ((toan ban) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo kha nang - thanh tung pham nhung ((cong dan) OR (cong tan)) ((toan ban) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: theo kha nang - thanh tung pham nhung ((cong dan) OR (cong tan)) ((toan ban) or (toan cao))*.