Perhaps you should try some spelling variations:
tuan nhung » quan nhung, tuan hung, thuat nhung
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
manh tung » manh hung, thanh tung
tung tuan » trung tuan, hung tuan, quang tuan
cong dan » cong san, cong tan, huong dan
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (hieu lang)) - manh tung tuan nhung cong dan ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu lang)) - manh tung tuan nhung cong dan ((than cao) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (hieu lang)) - manh tung tuan nhung cong dan ((than cao) OR (toan cao))*".