Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
truong ca » truong cao, trong ca, truong dai
truong va » truong dai, truong cao, truong dao
nhan cach » phan cac
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((truong ca) OR (truong va)) thong cong ban ((than cau) OR (nhan cach))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh ((truong ca) OR (truong va)) thong cong ban ((than cau) or (nhan cach))~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((truong ca) OR (truong va)) thong cong ban ((than cau) or (nhan cach))*.