Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh qua » tranh cua, thanh qua, trinh qua
dung song » dung cong, dung dong, vung song
thanh lap » thanh san, phan lap, thanh hai
qua dung » quang dung, su dung, qua song
song van » hoang van, trong van, duong van
than cap » khan cap, thanh cac, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - hanh tranh qua dung song van ((than cap) OR (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh tranh qua dung song van ((than cap) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - hanh tranh qua dung song van ((than cap) OR (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh tranh qua dung song van ((than cap) OR (thanh lap))*.