Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
xuc may » xuc hay, truc may, phuc may
sach ty » sach y, sach tu, sach thu
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu 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 dang xay hoi. ((nhieu viec) or (hieu viec)) cam xuc may tinh ((di cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty dang xay hoi. ((nhieu viec) OR (hieu viec)) cam xuc may tinh ((di cua) OR (de cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty dang xay hoi. ((nhieu viec) or (hieu viec)) cam xuc may tinh ((di cua) OR (de cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty dang xay hoi. ((nhieu viec) or (hieu viec)) cam xuc may tinh ((di cua) OR (de cua)) tre*.