Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
ban huong » bang phuong, ban hang, anh huong
ban chua » ban chia, benh chua, nhan chua
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - hanh ((ban chua) or (ban cua)) ban huong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((ban chua) OR (ban cua)) ban huong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((ban chua) or (ban cua)) ban huong dan toan cao*.