Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho chieu » theo chieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong ty
chan cau » phan cau, can cau, chinh cau

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 - canh tranh cua nhung ((cong tan) OR (cong thanh)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - canh tranh cua nhung ((cong tan) OR (cong thanh)) chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - canh tranh cua nhung ((cong tan) OR (cong thanh)) chan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - canh tranh cua nhung ((cong tan) OR (cong thanh)) chan cau*.