Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang van » hoang van, hang va
duoc tan » duoc ban, duoc dan, duoc tap
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, dan ky, ban ky
ve tao » ve bao, de tao, ve tac

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 ky) OR (van ky)) dang van hoi. hieu ve tao ((duoc tan) or (duc tan)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (van ky)) dang van hoi. hieu ve tao ((duoc tan) OR (duc tan)) thanh tai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((san ky) OR (van ky)) dang van hoi. hieu ve tao ((duoc tan) or (duc tan)) thanh tai cua tre*".