Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
trien minh » trien kinh, trieu minh, trien dich
tien minh » lien minh, tien manh, tien thinh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien minh) OR (trien minh)) - anh tang luan nhung ((cong tan) or (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien minh) OR (trien minh)) - anh tang luan nhung ((cong tan) OR (huong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien minh) OR (trien minh)) - anh tang luan nhung ((cong tan) or (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien minh) OR (trien minh)) - anh tang luan nhung ((cong tan) or (huong dan)) toan tap*.