Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
dung song » dung cong, dung dong, vung song
theo chu » theo chieu, cho chu, chao chu
cua dung » cua dang, cua dong, qua dung
song van » hoang van, trong van, duong van
van than » van thanh, van thang, van tuan
than cao » toan cao, thai cao, 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 hien) or (theo chu)) xanh - ((hanh tranh) or (hanh trinh)) cua dung song van than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo chu)) xanh - ((hanh tranh) OR (hanh trinh)) cua dung song van than cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (theo chu)) xanh - ((hanh tranh) or (hanh trinh)) cua dung song van than cao*.