Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
xay hoi » xa hoi, tay hoi, cay phoi
xuc van » duc van, luc van, vuc van
2 dang » 2 danh, b dang, o dang
_ dang » _ dan, _ danh, b dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((2 dang) OR (_ dang)) xay hoi. hieu qua cham xuc van hanh dai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((2 dang) OR (_ dang)) xay hoi. hieu qua cham xuc van hanh dai cua viet".
• Adding a wildcard symbol may retrieve word variants: su sach ((2 dang) OR (_ dang)) xay hoi. hieu qua cham xuc van hanh dai cua viet*.