Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
trinh vi » trinh va, trinh ve, trinh viet
truc va » thuc va, thuc vat, trung va
sach ty » sach tu, sach thu, xach tay
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
tuc va » thuc va, tuc xa, duc va
vi cua » vai cua, di 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 ty) or (sach y)) lang xa hoi. nhieu viec cam ((tuc va) OR (truc va)) trinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) lang xa hoi. nhieu viec cam ((tuc va) OR (truc va)) trinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach y)) lang xa hoi. nhieu viec cam ((tuc va) OR (truc va)) trinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) lang xa hoi. nhieu viec cam ((tuc va) OR (truc va)) trinh vi cua tre*.