Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
thu sach » tu sach, thuat sach, thuoc sach
viec cac » vien cac, viec cua, viec lam
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
lang ha » long ha
tac va » tac xa, tuc va, tac ha
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 nang ma hoa. hieu viec cac ((tac va) OR (tac da)) lang ha cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ma hoa. hieu viec cac ((tac va) OR (tac da)) lang ha cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ma hoa. hieu viec cac ((tac va) OR (tac da)) lang ha cua te*.