Perhaps you should try some spelling variations:
trung phat » truong phat, trung phan, trung nhat
trong phat » trong thuat, trong nha, trong hoat
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap
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 ((trung phat) or (trong phat)) thong cong tan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((trung phat) OR (trong phat)) thong cong tan ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((trung phat) or (trong phat)) thong cong tan ((toan cao) or (van ban))*.