Perhaps you should try some spelling variations:
tranh qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
chi xanh » chi anh, chi danh, chi hanh
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
than cau » than cap, thanh chau, thanh mau
toan cau » toan cao, toan ban, toan tap
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh tranh qua dung cong dan ((((than cau) OR (toan cau))) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh qua dung cong dan ((((than cau) OR (toan cau))) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - canh tranh qua dung cong dan ((((than cau) OR (toan cau))) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh tranh qua dung cong dan ((((than cau) OR (toan cau))) or (phan cau))*.