Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
danh vai » danh sai, danh va, doanh van
cham xuc » cam xuc, chat xuc, cham soc
hieu van » hieu va, thien van, lieu va
cua viet » ca viet, hoa viet, cua vat
dang xay » dang van, van xay
toc sach » hoc sach, doc sach, thuoc sach
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va
ky dang » ky nang, ky danh
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (toc sach)) ky dang xay hoi. ((hieu ve) or (hieu van)) cham xuc va danh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (toc sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham xuc va danh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (toc sach)) ky dang xay hoi. ((hieu ve) or (hieu van)) cham xuc va danh vai cua viet*.