Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
luu truc » luu tru, cau truc, cuu thuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va cham » va chat, va tham
bac va » ban va, bac ha, bao va
vi luu » vi lua
x hoi » xa hoi, o hoi, x ho

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

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