Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
thai cua » than cua, tai cuc, tri cua
thu san » thuy san, thu ban, phu san
ve cham » va cham, ve chat, vu cham
duc gia » quoc gia
cua chu » sua chua
san ky » sang ky, van ky, dan ky
ve cam » ve cac, va cam, ve cai
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) OR (ve cham)) duc gia thanh thai 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) OR (ve cham)) duc gia thanh thai 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) OR (ve cham)) duc gia thanh thai cua chu".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang ((x hoi) or (o hoc)). hieu ((ve cam) OR (ve cham)) duc gia thanh thai cua chu*.