Perhaps you should try some spelling variations:
chat tinh » chau tinh, cham tinh, cha tinh
hoc chat » hoc phat, hoc cao, hoc phan
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, khoan cam

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

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