Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thien hach » thien thanh
hien hanh » dieu hanh
va truong » van truong, xa truong, va thuong
va trong » va thong, va tuong, va trung
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) OR (hien hanh)) - thanh truong ((va trong) or (va truong)) cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hien hanh)) - thanh truong ((va trong) OR (va truong)) cong dan chan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien hach) OR (hien hanh)) - thanh truong ((va trong) or (va truong)) cong dan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) OR (hien hanh)) - thanh truong ((va trong) or (va truong)) cong dan chan cao*.