Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec lam » viec va
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
lo van » le van, vo van, do van
so van » su van, vo van
vi cuu » vi luu, vinh cuu

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