Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
cuu thuc » cuu tac
sach ty » sach y, sach tu, xach tay
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
xuc va » tuc va, luc va, xac va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) OR (sach thu)) xang xa hoi. hieu va tham ((xuc va) or (duc va)) hanh vi cuu thuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) xang xa hoi. hieu va tham ((xuc va) OR (duc va)) hanh vi cuu thuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) xang xa hoi. hieu va tham ((xuc va) or (duc va)) hanh vi cuu thuc".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) xang xa hoi. hieu va tham ((xuc va) or (duc va)) hanh vi cuu thuc*.