Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
thuc cao » thuoc cao, thuc co, thuc can
viec ban » viec lam, viec va, viec tai
ban thuc » ban thuoc, dan thuc, van thuc
te sach » toc sach
nang xa » nang x, lang xa, ang xa
mang xa » lang xa, mang may, dang xay
cao dan » cao dang, cao danh, cac dan
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
vi cua » vai cua, di cua
dan vi » doan vi, don vi, dan va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((((nang xa) OR (mang xa))) or (nang ma)) hoi. nhieu viec ban thuc cao dan vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((((nang xa) OR (mang xa))) OR (nang ma)) hoi. nhieu viec ban thuc cao dan vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((((nang xa) OR (mang xa))) or (nang ma)) hoi. nhieu viec ban thuc cao dan vi cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((((nang xa) OR (mang xa))) or (nang ma)) hoi. nhieu viec ban thuc cao dan vi cua te*.