Perhaps you should try some spelling variations:
canh tinh » hanh tinh, manh tinh, canh tranh
dang toan » dang tran, dung toan, dang thanh
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
dan toan » van toan, dan than, manh toan
he tong » he thong, he trong, he dong
he cong » che cong, te cong, ve cong

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 - canh tinh ((he tong) or (he cong)) cong ((dang toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - canh tinh ((he tong) OR (he cong)) cong ((dang toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - canh tinh ((he tong) or (he cong)) cong ((dang toan) or (dan toan)) cau*.