Perhaps you should try some spelling variations:
thanh tung » thanh cong
hanh trang » thanh trung, canh tranh, hanh trinh
hoac khong » hoa khong, hoc khong, hay khong
khong cang » thong cong, hong bang, khong dung
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cang tac » cong tac, canh tac, sang tac
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - ((hanh trang) or (thanh tung)) hoac khong cang tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((hanh trang) OR (thanh tung)) hoac khong cang tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh trang) or (thanh tung)) hoac khong cang tac toan cau*.