Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
thong phap » chong phap, thong phan, khong phap
phap thong » phap phong, phap chong, pho thong
hieu lang » chieu sang, hieu quang, nhieu tang
thong tan » thong than, thong tran, thong tin
phan cau » phan dau, phan cac, phan tu
than cap » khan cap, thanh lap, thanh cac
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 thong phap thong thong tan ((phan cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh thong phap thong thong tan ((phan cau) OR (than cap))*.