Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
cua cau » cua cac, cua chu, cua cay
sach ky » sac ky, sach y, sach ty
cua te » cua tu
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 ((vien cac) or (ve cham)) xuc van hanh tai ((cua te) or (cua cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((vien cac) OR (ve cham)) xuc van hanh tai ((cua te) OR (cua cau)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((vien cac) or (ve cham)) xuc van hanh tai ((cua te) or (cua cau))*.