Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
van thanh » ban thanh, van tuan
khoan va » doan va, nhan va, toan va
cong van » cong vang, cong san, song van
thanh tu » hanh tu, nhanh tu, thanh tung

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 - doanh ((khoan va) or (khoa ma)) nhung cong van thanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - doanh ((khoan va) OR (khoa ma)) nhung cong van thanh tu.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - doanh ((khoan va) or (khoa ma)) nhung cong van thanh tu*.