Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
cua viet » ca viet, hoa viet, cua vat
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
va cua » va chua, via cua, ca cua

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 xa hoi. hieu ve ((cam tuc) or (nam thuoc)) ((va hanh) or (va danh)) va cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve ((cam tuc) OR (nam thuoc)) ((va hanh) OR (va danh)) va cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve ((cam tuc) or (nam thuoc)) ((va hanh) or (va danh)) va cua viet*.