Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
van hanh » van thanh, ban hanh, van anh
ban hang » ngan hang
vien dai » hien dai
dai thuc » dan thuc, dai thu, dai thua
va tinh » may tinh
thu sac » thu sach, thu san, thu xac
cua tre » cua te, cuu tre, cua triet
cao hoi » cau hoi, co hoi, cao hoc
sac ky » cac ky, sai ky
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang cao hoi. hieu vien dai thuc ((((van hanh) or (ban hang))) or (va tinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang cao hoi. hieu vien dai thuc ((((van hanh) OR (ban hang))) OR (va tinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang cao hoi. hieu vien dai thuc ((((van hanh) or (ban hang))) or (va tinh)) vi cua tre*.