Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
chau tinh » cuu tinh, ha tinh, cua tinh
luan hang » luan nang, luan han, luan hung
hang cong » dang cong, hang nong, bang cong
ban thanh » ban hanh, ban hang
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chau tinh) or (diep tinh)) - hanh trinh luan hang cong ((dan toan) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chau tinh) OR (diep tinh)) - hanh trinh luan hang cong ((dan toan) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chau tinh) or (diep tinh)) - hanh trinh luan hang cong ((dan toan) or (ban thanh)) cau*.