Perhaps you should try some spelling variations:
trinh tuan » trinh quan, trinh toan, trinh luan
hanh trinh » canh tranh, hanh chinh
tuan nhung » quan nhung, tuan hung, thuat nhung
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
chi sach » chieu sach, co sach, moi sach
tran van » luan van

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) or (chinh sach)) - hanh trinh tuan nhung cong thanh tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sach) OR (chinh sach)) - hanh trinh tuan nhung cong thanh tran van*.