Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat xuc » chat huu, cam xuc, chao xu
va thanh » gia thanh, va tinh, le thanh
cay phoi » cap phoi, tay hoi, cay cho
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, gay thoi
ky dang » ky nang, ky danh
luu tre » luu tru, cuu tre, luy tre
va luu » van luu, ta luu, vi luu

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 dang ((xay hoi) or (cay phoi)). hieu ve chat xuc ((va thanh) OR (ban thanh)) va luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ((xay hoi) OR (cay phoi)). hieu ve chat xuc ((va thanh) OR (ban thanh)) va luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang ((xay hoi) or (cay phoi)). hieu ve chat xuc ((va thanh) OR (ban thanh)) va luu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ((xay hoi) or (cay phoi)). hieu ve chat xuc ((va thanh) OR (ban thanh)) va luu tre*.