Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh qua » tranh cua, thanh qua, trinh qua
qua trong » quan trong, qua trinh, qua song
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, xuan toan, dien toan
dan than » dan chan, ban than, van than

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 xanh - hanh tranh qua trong cong ((((dan toan) or (dan than))) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tranh qua trong cong ((((dan toan) OR (dan than))) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tranh qua trong cong ((((dan toan) or (dan than))) or (manh toan)) cau*.