Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien dai » hien dai
dai xuc » dai xu, dai luoc, dai thuc
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
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: vu sac ky nang x hoi. hieu vien dai xuc ((va hanh) or (gia thanh)) vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x hoi. hieu vien dai xuc ((va hanh) OR (gia thanh)) vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x hoi. hieu vien dai xuc ((va hanh) or (gia thanh)) vai ((cua tre) or (cua te))*.