Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
hoc hiem » hoc hien, hoc thieu, hoc nhiet
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hiem) OR (hoc thiet)) ngan - thanh trung ((cua thong) or (cua khong)) cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hiem) OR (hoc thiet)) ngan - thanh trung ((cua thong) OR (cua khong)) cong dan than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hiem) OR (hoc thiet)) ngan - thanh trung ((cua thong) or (cua khong)) cong dan than cap*".