Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
va hanh » van hanh, va danh, ban hanh
sach ty » sach y, sach tu, sach thu
qua cam » qua cham, qua cac, qua ca
ty nang » ky nang, ty xang, ty hang
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu qua cam xuc ((va hanh) OR (va thanh)) ((vi luu) OR (vi lua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang x hoi. hieu qua cam xuc ((va hanh) OR (va thanh)) ((vi luu) or (vi lua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. hieu qua cam xuc ((va hanh) OR (va thanh)) ((vi luu) or (vi lua)) tre*.