Perhaps you should try some spelling variations:
thanh sang » thanh san, thanh hang, thanh hoang
ban thanh » ban hanh, ban hang
cham sat » cham mat, khao sat, giam sat
sang cua » mang cua, song cua, hang cua
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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 dang xa hoi. hieu va ((cham sat) or (cham soc)) ban thanh sang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang xa hoi. hieu va ((cham sat) OR (cham soc)) ban thanh sang cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang xa hoi. hieu va ((cham sat) or (cham soc)) ban thanh sang cua tre*.