Perhaps you should try some spelling variations:
thanh thai » thanh tai, nhanh thai, thanh thao
thanh hai » thanh phan, thanh hoa, thanh san
thu san » thuy san, thu ban, phu san
cam duc » cam xuc, cao duc, pham duc
cua chu » sua chua
hieu ve » hieu va, hieu van
san ky » sang ky, van ky, dan ky
ve cam » ve cham, ve cac, va cam
o hoc » co hoc, mo hoc, so hoc
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ky nang ((x hoi) or (o hoc)). hieu ve cam duc va ((thanh thai) OR (thanh hai)) cua chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ky nang ((x hoi) OR (o hoc)). hieu ve cam duc va ((thanh thai) OR (thanh hai)) cua chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky nang ((x hoi) or (o hoc)). hieu ve cam duc va ((thanh thai) OR (thanh hai)) cua chu".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang ((x hoi) or (o hoc)). hieu ve cam duc va ((thanh thai) OR (thanh hai)) cua chu*.