Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chat » tinh chat, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
chat dung » chan dung, chat luong, chat quang
dung cong » dung trong
vang tuan » van tuan, quang tuan, hoang tuan
vong tuan » vuong tuan, cong tuan, hoang tuan
ho chieu » theo chieu, doi chieu, mot chieu

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 (hoc thieu)) sach - hanh trinh chat dung cong ((vang tuan) or (vong tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh trinh chat dung cong ((vang tuan) OR (vong tuan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - hanh trinh chat dung cong ((vang tuan) or (vong tuan)) ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - hanh trinh chat dung cong ((vang tuan) or (vong tuan)) ban*.