Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
doanh van » doan van, doanh va, doanh ban
va triet » va thiet, va trien, ve triet
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
va doanh » van doanh, vay doanh, va danh
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu
van va » van vat, van van, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang mai khoi. lieu va ((((cam tu) or (nam thuoc))) or (cam xuc)) va doanh van va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang mai khoi. lieu va ((((cam tu) OR (nam thuoc))) OR (cam xuc)) va doanh van va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang mai khoi. lieu va ((((cam tu) or (nam thuoc))) or (cam xuc)) va doanh van va triet*.