Perhaps you should try some spelling variations:
khanh luan » khanh thuan, doanh luan, hang luan
cua viet » ca viet, hoa viet, cua dieu
xa khanh » xa thanh, van khanh, dat khanh
chat xuc » chat huu, cam xuc, chao xu
so sach » so sanh, bo sach, co sach
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
lo vang » ly vang, hoa vang
ma hoi » mai hoi, xa hoi, ma hoa
xuc xa » tuc xa, buc xa
lo van » le van, vo van, so van

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((lo vang) OR (lo van)) ma hoi. hieu va chat xuc xa khanh luan ((cua viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((lo vang) OR (lo van)) ma hoi. hieu va chat xuc xa khanh luan ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((lo vang) OR (lo van)) ma hoi. hieu va chat xuc xa khanh luan ((cua viet) or (cua vat))".
• Adding a wildcard symbol may retrieve word variants: so sach ((lo vang) OR (lo van)) ma hoi. hieu va chat xuc xa khanh luan ((cua viet) or (cua vat))*.