Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hanh tai » hang tai, han tai, hinh tai
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
tu san » thu san, tu ban, tu can
thu xa » thu xac, thu ha, thu xe
san ky » sang ky, van ky, dan ky
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((mai hoi) or (lai hoi)). lieu va nam thu xa ((hanh tai) OR (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((mai hoi) OR (lai hoi)). lieu va nam thu xa ((hanh tai) OR (thanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((mai hoi) or (lai hoi)). lieu va nam thu xa ((hanh tai) OR (thanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((mai hoi) or (lai hoi)). lieu va nam thu xa ((hanh tai) OR (thanh tai)) cua tre*.