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