Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cua » di 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) or (doc sach)) ky nang xa hoi. hieu ve cam xuc va thanh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (doc sach)) ky nang xa hoi. hieu ve cam xuc va thanh ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (doc sach)) ky nang xa hoi. hieu ve cam xuc va thanh ((vi cua) OR (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (doc sach)) ky nang xa hoi. hieu ve cam xuc va thanh ((vi cua) OR (vai cua)) triet*.