Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
va triet » va thiet, va trien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu
ma hoi » mai hoi, xa hoi, ma hoa
vai va » mai va, dai va, hai 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 ma hoi. lieu va ((((cam tu) or (nha thuoc))) or (cam xuc)) van hanh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. lieu va ((((cam tu) OR (nha thuoc))) OR (cam xuc)) van hanh vai va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. lieu va ((((cam tu) or (nha thuoc))) or (cam xuc)) van hanh vai va triet*.