Perhaps you should try some spelling variations:
chat xanh » nhat hanh, chat ban, chat ran
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
anh dung » anh dong, anh huong, sach dung
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: cao chat xanh - ((anh tang) or (anh dung)) qua dung cong dan ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao chat xanh - ((anh tang) OR (anh dung)) qua dung cong dan ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: cao chat xanh - ((anh tang) or (anh dung)) qua dung cong dan ((phan cau) or (phan dau))*.