Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, doi chieu, mot chieu
tang cua » mang cua, hang cua, tang luan
ban than » ban thanh, van thanh, ban hang

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