Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh tuan » trinh quan, trinh toan, trinh luan
tuan nhung » quan nhung, tuan hung, thuat nhung
chi sach » chinh sach, chieu sach, co sach
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran van » luan van
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 tuan nhung ((cong tan) OR (cong san)) tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi sach - hanh trinh tuan nhung ((cong tan) OR (cong san)) tran van*".