Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
duong tinh » duong minh, dong tinh, dung tinh
duong sinh » duong minh, duong manh, trong sinh
chao chu » cho chu, cua chu, cao cho
ho chieu » theo chieu, hoc thieu, doi chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((chao chu) or (ho chieu)) sach - hanh trinh suat thong ((duong tinh) OR (duong sinh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (ho chieu)) sach - hanh trinh suat thong ((duong tinh) OR (duong sinh)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao chu) or (ho chieu)) sach - hanh trinh suat thong ((duong tinh) OR (duong sinh)) van ban".
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (ho chieu)) sach - hanh trinh suat thong ((duong tinh) OR (duong sinh)) van ban*.