Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
pham thuong » phan thuong, pham hong
thanh tung » thanh cong
pham thang » pham thanh, pham hang, pham quang
tien anh » tieng anh, tien manh, dien anh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (tien anh)) - thanh tung ((pham thang) OR (pham thuong)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (tien anh)) - thanh tung ((pham thang) OR (pham thuong)) cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (tien anh)) - thanh tung ((pham thang) OR (pham thuong)) cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (tien anh)) - thanh tung ((pham thang) OR (pham thuong)) cong dan than cao*.