Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
tan thuat » thu thuat, va thuat, van thuan
tam thuat » tam than, thu thuat, va thuat
ho chieu » theo chieu, hoc thieu, 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 (doi chieu)) sach - hanh tranh cua nhung cong ((tan thuat) or (tam thuat)) cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh tranh cua nhung cong ((tan thuat) OR (tam thuat)) cam.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh tranh cua nhung cong ((tan thuat) or (tam thuat)) cam".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh tranh cua nhung cong ((tan thuat) or (tam thuat)) cam*.