Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh tram » hanh tam, hanh trang, thanh tran
van nhung » van nhuong, va nhung, van hung
cong tinh » cong trinh, cong vinh, cong thanh
long tinh » trong tinh, luong tin, dong tin
ho chieu » theo chieu, doi chieu, mot chieu
tram van » tran van, tam van, trang van
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: ((ho chieu) or (hoc thieu)) sach - hanh tram van nhung ((cong tinh) OR (long tinh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh tram van nhung ((cong tinh) OR (long tinh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - hanh tram van nhung ((cong tinh) OR (long tinh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - hanh tram van nhung ((cong tinh) OR (long tinh)) toan cao*.