Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trinh » canh tranh, hanh chinh
luat nhung » luat chung, luat thuong, thuat nhung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
dan toan » van toan, dan than, manh toan
ban hang » ngan hang

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 trinh luat nhung cong ((dan toan) or (ban hang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh trinh luat nhung cong ((dan toan) OR (ban hang)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh trinh luat nhung cong ((dan toan) or (ban hang)) cau*.