Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ve cac ((xuc va) or (tuc va)) hanh ((vi cua) or (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve cac ((xuc va) OR (tuc va)) hanh ((vi cua) OR (di cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve cac ((xuc va) or (tuc va)) hanh ((vi cua) or (di cua)) triet*.