Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
canh chuc » hanh phuc, cong chuc, dinh chuc
anh thuc » am thuc, dan thuc, anh tu
tinh van » trinh van, dinh van, tinh va
van cho » van chi, san cho, van chat
va tinh » may tinh
tu sach » thu sach, su sach, te sach
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky danh
cho tre » cho thue, khoe tre

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