Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
danh vai » danh sai, danh va, doanh van
vai cuu » vai cua
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
lao va » tao va, cao va, dao va
bao va » bao ve, tao va, ban va

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) or (su sach)) ky nang xa hoi. hieu vien bach ((lao va) or (bao va)) danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu vien bach ((lao va) OR (bao va)) danh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. hieu vien bach ((lao va) or (bao va)) danh vai cuu tre*.