Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, danh va, doanh van
dang xay » dang van, van xay
cham xuc » cam xuc, chat xuc, cham soc
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
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: ((tu 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: ((tu sach) OR (toc sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham xuc va danh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu 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: ((tu sach) or (toc sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham xuc va danh vai cua viet*.