Perhaps you should try some spelling variations:
khanh di » khanh bui, khanh duy, thanh doi
thu sach » thuat sach, thuoc sach, thu hoach
xa khanh » xa thanh, van khanh, dat khanh
tu sach » su sach, te sach, tu cach
cao xuc » cao duc, cao suc, chat xuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
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) or (thu sach)) ky lang xa hoi. hieu va ((cao xuc) OR (cam xuc)) xa khanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky lang xa hoi. hieu va ((cao xuc) OR (cam xuc)) xa khanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky lang xa hoi. hieu va ((cao xuc) OR (cam xuc)) xa khanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky lang xa hoi. hieu va ((cao xuc) OR (cam xuc)) xa khanh di cua tre*.