Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, doi chi, mot chieu
trung cap » truong cao, trung tam
hanh cong » thanh cong, hang cong, hanh dong
ho chieu » theo chieu, hoc thieu, mot chieu
han cong » phan cong, hang cong, han tong
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) sach - hanh trung cap ((han cong) OR (hanh cong)) tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - hanh trung cap ((han cong) OR (hanh cong)) tac toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) sach - hanh trung cap ((han cong) OR (hanh cong)) tac toan cao*".