Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
chua dong » cua dong, ha dong, huy dong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - thanh trung ((cua tong) or (chua dong)) ((cong dan) OR (cong tan)) hanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - thanh trung ((cua tong) OR (chua dong)) ((cong dan) OR (cong tan)) hanh va*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - thanh trung ((cua tong) or (chua dong)) ((cong dan) OR (cong tan)) hanh va*".