Perhaps you should try some spelling variations:
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
cong san » cong tac
than cao » toan cao, thai cao, than cap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh ((trung va) or (truong va)) trong cong san ((than cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh ((trung va) OR (truong va)) trong cong san ((than cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh ((trung va) or (truong va)) trong cong san ((than cao) or (toan tap))*.