Perhaps you should try some spelling variations:
thanh doanh » hanh doanh, thanh toan, chinh doanh
doanh cua » doanh luan
doc sach » hoc sach, toc sach, nuoc sach
nang ma » tang ma, sang ma, nang cao
qua cam » qua cham, qua cac, qua cai
sach ky » sac ky, sach y, sach ty
tuc va » thuc va, truc va, tuc xa
luc va » duc va, loc va
qua ca » qua cac, qua cua, qua cai
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: doc sach ky nang ma hoa. hieu ((qua cam) OR (qua ca)) ((luc va) or (tuc va)) thanh doanh cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang ma hoa. hieu ((qua cam) OR (qua ca)) ((luc va) OR (tuc va)) thanh doanh cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ky nang ma hoa. hieu ((qua cam) OR (qua ca)) ((luc va) or (tuc va)) thanh doanh cua te".
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang ma hoa. hieu ((qua cam) OR (qua ca)) ((luc va) or (tuc va)) thanh doanh cua te*.