Perhaps you should try some spelling variations:
canh thuc » anh thuc, cach thuc, can thuc
danh thuc » dan thuc, anh thuc, dinh thuc
hieu viec » nhieu viec, hieu ve, sieu viet
dang xay » dang van, van xay
tinh va » tich va, trinh van, trinh vat
va tinh » may tinh
sach ky » sac ky, sach ty, sach kem
xay hoi » xa hoi, tay hoi, cay phoi
chu tre » cho tre, chu tri, cuu tre
va chu » va che, va cau, va chi

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 ky) or (sach y)) dang xay hoi. hieu viec ((canh thuc) OR (danh thuc)) va tinh va chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) dang xay hoi. hieu viec ((canh thuc) OR (danh thuc)) va tinh va chu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach y)) dang xay hoi. hieu viec ((canh thuc) OR (danh thuc)) va tinh va chu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) dang xay hoi. hieu viec ((canh thuc) OR (danh thuc)) va tinh va chu tre*.