Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chuc » theo chu, tho chu, treo chu
trung ha » trung hoc, trung tam, trung cap
cong tac » cong ty
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
ha tang » phap tang, cao tang, kho tang

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 chuc nang - thanh trung ha tang ((cong san) OR (cong tac)) ((toan tai) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chuc nang - thanh trung ha tang ((cong san) OR (cong tac)) ((toan tai) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chuc nang - thanh trung ha tang ((cong san) OR (cong tac)) ((toan tai) or (toan ban))*.