Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh dung » thanh duong, thanh tung, thanh hung
hoc thieu » toc thieu, hoc hien
suong dan » tuong dan, xuong dan, duong dan
chinh can » chinh ca, chinh ban, chinh cau
dung mat » duong mat, dung dat, dung may
mat bang » cao bang

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 - thanh dung mat bang ((suong dan) or (huong dan)) chinh can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh dung mat bang ((suong dan) OR (huong dan)) chinh can*.