Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
canh trang » canh tranh, hanh trang, banh trang
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trang va » tran van, hang va
van phan » van phong, van thanh, luan phan
phan cac » nhan cach, phan dau, phan lap

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