Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
ban luong » ban huong, ban tuong, ban muong
van luong » van duong, van cuong, nang luong
cong lap » cong luan, cong lang, cong tac
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh cong lap ((ban luong) OR (van luong)) dan chan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh cong lap ((ban luong) OR (van luong)) dan chan cau*.