Perhaps you should try some spelling variations:
tinh da » tinh va, tinh gia, tinh lao
tinh di » tinh doi, trinh di, tin di
hieu va » lieu va, hieu qua
tu san » thu san, tu ban, tu can
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao
san ky » sang ky, van ky, dan ky
cua te » cua tu
o hoc » co hoc, mo hoc, so hoc
o hoi » co hoi, o hai, o hoa

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 ((o hoi) OR (o hoc)). hieu va cam xuc va ((tinh di) or (tinh da)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((o hoi) OR (o hoc)). hieu va cam xuc va ((tinh di) OR (tinh da)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((o hoi) OR (o hoc)). hieu va cam xuc va ((tinh di) or (tinh da)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((o hoi) OR (o hoc)). hieu va cam xuc va ((tinh di) or (tinh da)) cua te*.