Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh van » tran van, trinh van, thanh van
tranh va » trang va, trinh va, thanh va
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan van
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 - canh ((tranh va) or (tranh van)) thong cong dan ((phan dau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh ((tranh va) OR (tranh van)) thong cong dan ((phan dau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh ((tranh va) or (tranh van)) thong cong dan ((phan dau) or (phan cac))*.