Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
cua thanh » gia thanh, va thanh, ha thanh
luong van » luong va, duong van, luong vat
ho chieu » theo chieu, hoc thieu, mot chieu
long van » song van, lang van, tong van
tuan cau » toan cau, quan cau, tuan cu

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