Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ty tang » tay tang, ty hang, ky tang
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
danh ca » dan ca, doanh cua, danh cho
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ca cua » co 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 ((ty tang) OR (ty xang)) xa hoi. ((hieu va) or (lieu va)) cam xuc va danh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty tang) OR (ty xang)) xa hoi. ((hieu va) OR (lieu va)) cam xuc va danh ca cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty tang) OR (ty xang)) xa hoi. ((hieu va) or (lieu va)) cam xuc va danh ca cua tre*".