Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
van cau » van dau, van hau, van chat
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, duc va
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((x hoi) or (xa hoi)). hieu van cau ((tuc va) OR (tuc xa)) danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (xa hoi)). hieu van cau ((tuc va) OR (tuc xa)) danh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) or (xa hoi)). hieu van cau ((tuc va) OR (tuc xa)) danh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) or (xa hoi)). hieu van cau ((tuc va) OR (tuc xa)) danh vai cuu tre*.