Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
van tai » von tai, van tuan
sach ky » sac ky, sach y, sach ty
han tri » han tai, van tri, thanh tri
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, luc va, xac va
va cau » van cau, va cac, va dau

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 ky nang xa hoi. hieu va cau ((xuc va) OR (tuc va)) ((han tri) or (van tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu va cau ((xuc va) OR (tuc va)) ((han tri) OR (van tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu va cau ((xuc va) OR (tuc va)) ((han tri) or (van tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va cau ((xuc va) OR (tuc va)) ((han tri) or (van tai)) cua te*.