Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu nganh) or (vien nganh)) - thanh trung cap thong ((cong dan) or (cong tan)) hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (vien nganh)) - thanh trung cap thong ((cong dan) OR (cong tan)) hang dau.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (vien nganh)) - thanh trung cap thong ((cong dan) or (cong tan)) hang dau*.