Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
lang ha » long ha
xa lang » va lang, ba lang, ha lang
cac tac » cac toc, cac bac, cac dac
sach ky » sac ky, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
tac xa » tuc xa, tac da
ha cua » hoa cua, hai cua, nha cua
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: thu ((sach ky) OR (sach y)) nang ma hoa. ((hieu viec) or (nhieu viec)) cac tac xa lang ha cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang ma hoa. ((hieu viec) OR (nhieu viec)) cac tac xa lang ha cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) nang ma hoa. ((hieu viec) or (nhieu viec)) cac tac xa lang ha cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) nang ma hoa. ((hieu viec) or (nhieu viec)) cac tac xa lang ha cua te*.