Perhaps you should try some spelling variations:
dai danh » dao danh, day danh, loai danh
dai dang » da dang, dai nang, hai dang
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
te san » te ban, ke san, tu san
te cac » tu cac, ve cac, te cao
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te san) or (te cac)) ky nang x hoi. hieu va am thuc ((dai danh) OR (dai dang)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te san) OR (te cac)) ky nang x hoi. hieu va am thuc ((dai danh) OR (dai dang)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te san) or (te cac)) ky nang x hoi. hieu va am thuc ((dai danh) OR (dai dang)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te san) or (te cac)) ky nang x hoi. hieu va am thuc ((dai danh) OR (dai dang)) dai cua tre*.