Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
trinh quan » tinh quang, trinh luat
khung cong » nhung cong, khung long, phung cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cong tan » cong tac, cong san, cong thanh
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan 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 thien thanh - hanh ((trinh han) or (trinh quan)) khung cong tan ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - hanh ((trinh han) OR (trinh quan)) khung cong tan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien thanh - hanh ((trinh han) or (trinh quan)) khung cong tan ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - hanh ((trinh han) or (trinh quan)) khung cong tan ((than cap) OR (khan cap))*.