Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh van » trinh han, trinh quan, trinh toan
van trong » van truong, vang trong, ban trong
cong dang » cong dong, cong dung, cong danh
thanh cac » hanh cac, thanh bac, thanh ca
cong dan » cong san, cong tan, huong dan

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) or (chieu tinh)) - canh trinh van trong ((cong dang) OR (cong dan)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu tinh)) - canh trinh van trong ((cong dang) OR (cong dan)) thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu tinh)) - canh trinh van trong ((cong dang) OR (cong dan)) thanh cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu tinh)) - canh trinh van trong ((cong dang) OR (cong dan)) thanh cac*.