Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tu cach » tu cac
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
cuu tre » cua tre, cau tren, cau treo
va cao » va cac, va co, va dao
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: ((tu cach) or (thu sach)) ky lang xa hoi. hieu va cao ((xuc van) or (duc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky lang xa hoi. hieu va cao ((xuc van) OR (duc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky lang xa hoi. hieu va cao ((xuc van) or (duc va)) hanh vi cuu tre*.