Perhaps you should try some spelling variations:
hoc chinh » hoan chinh, hoc sinh
hanh manh » hanh mang, lanh manh, hoang manh
hoc kinh » hoc sinh, luoc kinh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
manh va » hanh va, anh va, minh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chinh) OR (hoc kinh)) sach - hanh manh va nhung ((cong dan) or (cong tan)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chinh) OR (hoc kinh)) sach - hanh manh va nhung ((cong dan) OR (cong tan)) than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chinh) OR (hoc kinh)) sach - hanh manh va nhung ((cong dan) or (cong tan)) than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc chinh) OR (hoc kinh)) sach - hanh manh va nhung ((cong dan) or (cong tan)) than cap*.