Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
vat dung » viet dung, mat duong, xay dung
van dung » van dong, xay dung, tin dung
cong san » cong tac
san thai » sac thai, ban thai, van thai
thai cao » tai cao, thoai cac, thuat cao
va dung » va duong, va ung, va dong

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung ((vat dung) OR (((va dung) OR (van dung)))) cong san thai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh tung ((vat dung) or (((va dung) OR (van dung)))) cong san thai cao~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung ((vat dung) or (((va dung) OR (van dung)))) cong san thai cao*.