Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
chua tre » chua tri, cua tre, chua trieu
viec cac » vien cac, viec cua, viec lam
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
sach ly » sach y, sach lo, sach ty
lang va » lang van, hang va, lang ha
va chua » vua chua, ca chua, va chu
tu sach » thu sach, su sach, te sach
tac va » tac xa, tuc va, tac ha

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 ly ((nang ma) or (tang ma)) hoa. hieu viec cac ((tac va) OR (tac da)) lang va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((nang ma) OR (tang ma)) hoa. hieu viec cac ((tac va) OR (tac da)) lang va chua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly ((nang ma) or (tang ma)) hoa. hieu viec cac ((tac va) OR (tac da)) lang va chua tre*".