Perhaps you should try some spelling variations:
truong van » truong va, truong dai, truong cao
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trong van » trong cac
cong tan » cong tac, cong san, cong thanh
gian cap » gian cam, gian cham, gian chau
gian cac » gian dan, gian cua
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((truong van) OR (trong van)) nhung cong tan ((gian cap) or (gian cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((truong van) OR (trong van)) nhung cong tan ((gian cap) OR (gian cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh ((truong van) OR (trong van)) nhung cong tan ((gian cap) or (gian cac))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((truong van) OR (trong van)) nhung cong tan ((gian cap) or (gian cac))*.