Perhaps you should try some spelling variations:
van chat » cao chat
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
lang xa » lang ha, dang xay, lang van
van hai » van ha, van hanh, van phan
cua tre » cua te, cuu tre, cua triet
can ky » dan ky, ban ky, tan ky
loc va » hoc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((can ky) or (van ky)) lang xa hoi. hieu ((van hai) OR (van chat)) loc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((can ky) OR (van ky)) lang xa hoi. hieu ((van hai) OR (van chat)) loc va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((can ky) or (van ky)) lang xa hoi. hieu ((van hai) OR (van chat)) loc va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((can ky) or (van ky)) lang xa hoi. hieu ((van hai) OR (van chat)) loc va thanh vi cua tre*.