Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
sach ky » sac ky, sach y, sach ty
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
so sach » so sanh, bo sach, co sach
cam tuc » cam tu, dam thuc, nam truc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
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: so sach ky nang xa hoi. hieu va ((((cam tuc) or (cam xuc))) or (nam thuc)) va danh va cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu va ((((cam tuc) OR (cam xuc))) OR (nam thuc)) va danh va cua viet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu va ((((cam tuc) or (cam xuc))) or (nam thuc)) va danh va cua viet*.