Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
san toan » van toan, dan toan, manh toan
toan ban » van ban
tung va » trung va, tuong va, dung va

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 (theo chieu)) sach - thanh tung va ((dung cong) or (thong cong)) san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - thanh tung va ((dung cong) OR (thong cong)) san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - thanh tung va ((dung cong) or (thong cong)) san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - thanh tung va ((dung cong) or (thong cong)) san toan ban*.