Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, van anh, van ban
ban hang » ngan hang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. hieu vien cac xuc ((((van hanh) or (ban hanh))) or (ban hang)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu vien cac xuc ((((van hanh) OR (ban hanh))) OR (ban hang)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu vien cac xuc ((((van hanh) or (ban hanh))) or (ban hang)) di cua tre*.