Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong ban » cong bang, cong san, cong dan
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 thieu xanh - thanh ((trung va) or (trung ha)) phuong ((cong ban) OR (cong tan)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung va) OR (trung ha)) phuong ((cong ban) OR (cong tan)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung va) or (trung ha)) phuong ((cong ban) OR (cong tan)) khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung va) or (trung ha)) phuong ((cong ban) OR (cong tan)) khan cap*.