Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
cau treo » cau theo, cau tren, cau triet
hieu va » lieu va, hieu qua
thu ban » thu hang
chu tri » chua tri, chu thi, chu tai
cac lao » ca lao, cac loai, cac giao
lao va » tao va, cao va, bao va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (thu ban)) ky nang x hoi. hieu va cac lao va doanh van ((chu tri) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thu ban)) ky nang x hoi. hieu va cac lao va doanh van ((chu tri) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thu ban)) ky nang x hoi. hieu va cac lao va doanh van ((chu tri) or (cau treo))*.