Perhaps you should try some spelling variations:
tranh chua » tranh cua, trinh chuan, tranh chap
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
chua dang » cua dang, chua dong, chua nang
cong tac » cong ty
than cap » khan cap, thanh lap, thanh cac
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 thiet anh - canh tranh chua dang ((cong san) OR (cong tac)) ((than cap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - canh tranh chua dang ((cong san) OR (cong tac)) ((than cap) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet anh - canh tranh chua dang ((cong san) OR (cong tac)) ((than cap) or (toan tap))*".