Perhaps you should try some spelling variations:
nhieu viec » hieu viec
nhien viet » nhin viet, nghiep viet, trien viet
trinh do » trinh ky
va trinh » van trinh, va tinh, lap trinh
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
ky lang » ky dang, ky tang, tay lang
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
do cua » doi cua, co 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: tu sach ((ky lang) OR (ky nang)) xa hoi. ((nhieu viec) or (nhien viet)) cam tuc va trinh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky nang)) xa hoi. ((nhieu viec) OR (nhien viet)) cam tuc va trinh do cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky lang) OR (ky nang)) xa hoi. ((nhieu viec) or (nhien viet)) cam tuc va trinh do cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) OR (ky nang)) xa hoi. ((nhieu viec) or (nhien viet)) cam tuc va trinh do cua tre*.