Perhaps you should try some spelling variations:
cach thuc » anh thuc
dinh dai » dinh dat, sinh dai, dinh dao
sinh ky » sinh ly, sinh y, kinh ky
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac thu » cac thoi
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ky nang xa hoi. hieu ve ((cac thu) OR (cach thuc)) va dinh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky nang xa hoi. hieu ve ((cac thu) OR (cach thuc)) va dinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky nang xa hoi. hieu ve ((cac thu) OR (cach thuc)) va dinh dai cua tre*.