Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
thong cong » trong cong, tong cong, thong thong
nhung don » nhung van, nhung bo
chi sach » chinh sach, chieu sach, co sach
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - hanh trinh luan ((nhung don) or (thong cong)) ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - hanh trinh luan ((nhung don) OR (thong cong)) ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - hanh trinh luan ((nhung don) or (thong cong)) ((dan toan) or (dan than)) cau*.