Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hanh tai » thanh tai, hang tai, hinh tai
tu sach » thu sach, su sach, te sach
han tai » hang tai, nhan tai, van tai
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
lam lo » nam lo, lam co, lam so
cam lo » nam lo, cam ly, cam o

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 xa hoi. hieu viec ((lam lo) or (cam lo)) van ((hanh tai) OR (han tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu viec ((lam lo) OR (cam lo)) van ((hanh tai) OR (han tai)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu viec ((lam lo) or (cam lo)) van ((hanh tai) OR (han tai)) cuu tre*".