Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
truong dao » truong cao, truong bo
thong cong » trong cong, tong cong, thong thong
den thanh » de thanh, dinh thanh, dong thanh
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 thanh) or (den thanh)) - thanh ((truong dao) or (truong dai)) thong cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (den thanh)) - thanh ((truong dao) OR (truong dai)) thong cong dan chan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (den thanh)) - thanh ((truong dao) or (truong dai)) thong cong dan chan cao*.