Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
tu sac » tu cac, tu san, tu bac
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » tuc va, luc va, xac va
vi luu » vi lua
tru » truc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky lang ha hoi. hieu qua cham ((xuc va) or (duc va)) hanh vi luu tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky lang ha hoi. hieu qua cham ((xuc va) OR (duc va)) hanh vi luu tru.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky lang ha hoi. hieu qua cham ((xuc va) or (duc va)) hanh vi luu tru*.