Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cac thuc » cach thuc, cac thu, can thuc
va trien » va truyen, va thiet, va tuyen
tu sach » su sach, te sach, tu cach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hang » van hang, va nang, va lang
hang vi » hang va, hanh vi, hang di
ve cac » va cac, vien cac
vi va » vi van, vai va, vu va

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: ((tu sach) OR (thu sach)) ky lang xa hoi. hieu ve cac thuc va hang vi va trien~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky lang xa hoi. hieu ve cac thuc va hang vi va trien*.