Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh thang
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
va hang » van hang, va nang, va lang
khan ap » khan cap, khan dam
han ap » han tap, dan ap, han phap

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) or (hoc hien)) tinh - thanh trang va hang cong dan ((khan ap) or (han ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) tinh - thanh trang va hang cong dan ((khan ap) OR (han ap)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) tinh - thanh trang va hang cong dan ((khan ap) or (han ap))*.