Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xac ky » sac ky
bac ky » ban ky, sac ky, bac sy
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((((xac ky) OR (cac ky))) or (bac ky)) nang xa hoi. hieu qua cac lo va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((((xac ky) OR (cac ky))) OR (bac ky)) nang xa hoi. hieu qua cac lo va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((((xac ky) OR (cac ky))) or (bac ky)) nang xa hoi. hieu qua cac lo va hanh dai cua tre*".