Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, nhanh hai, hang hai
cham tuc » nham thuc, pham thuc, tham thuc
dang xay » dang van, van xay
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
te sach » toc sach
tuc va » thuc va, truc va, tuc xa

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 (te sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh hai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang xay hoi. ((hieu ve) OR (hieu van)) cham tuc va hanh hai cua viet*.