Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, ho chieu, mot chieu
trinh van » trinh han, trinh quan, trinh toan
van nhung » van nhuong, va nhung, van hung
doi chi » doi khi
san can » ban can, san chang, van canh
san van » tan van, luan van, tran 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 chieu) OR (doi chi)) sach - hanh trinh van nhung cong ((san can) or (san van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - hanh trinh van nhung cong ((san can) OR (san van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) sach - hanh trinh van nhung cong ((san can) or (san van)) ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) sach - hanh trinh van nhung cong ((san can) or (san van)) ban*.