Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
luat dung » suat dung, luat chung, luat quang
dung cong » dung trong
vang phan » nang phan, quang phan, va phan
ho chieu » theo chieu, hoc thieu, mot chieu
van phan » van phong, van thanh, luan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - hanh trinh luat dung cong ((vang phan) or (van phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh trinh luat dung cong ((vang phan) OR (van phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh trinh luat dung cong ((vang phan) or (van phan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh trinh luat dung cong ((vang phan) or (van phan)) cau*.