Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap

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 - hanh trinh va nhung ((cong dan) or (cong thanh)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh va nhung ((cong dan) OR (cong thanh)) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh va nhung ((cong dan) or (cong thanh)) than cau*.