Perhaps you should try some spelling variations:
doanh cua » doanh luan
va thanh » gia thanh, ban thanh, le thanh
toc sac » toc sach, toc san, hoc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
va tinh » may tinh
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang ma hoa. hieu va cam luc ((va thanh) OR (va tinh)) ((doanh cua) or (doanh nhan)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang ma hoa. hieu va cam luc ((va thanh) OR (va tinh)) ((doanh cua) OR (doanh nhan)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky nang ma hoa. hieu va cam luc ((va thanh) OR (va tinh)) ((doanh cua) or (doanh nhan)) te".
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang ma hoa. hieu va cam luc ((va thanh) OR (va tinh)) ((doanh cua) or (doanh nhan)) te*.