Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung vap » trung cap, trung va, trung van
vap nhung » va nhung, ve nhung, voi nhung
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung vap nhung ((cong ban) OR (cong tan)) ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung vap nhung ((cong ban) or (cong tan)) ((than cau) OR (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung vap nhung ((cong ban) or (cong tan)) ((than cau) OR (toan cau))*.