Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
dan toan » van toan, dan than, xuan toan

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