Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
cong sang » cong lang, cong vang, cong bang
ho chieu » theo chieu, doi chieu, mot chieu
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
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 (hoc thieu)) sach - anh tang cua nhung ((cong san) or (cong sang)) tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - anh tang cua nhung ((cong san) OR (cong sang)) tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - anh tang cua nhung ((cong san) or (cong sang)) tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - anh tang cua nhung ((cong san) or (cong sang)) tuan cau*.