Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham sat » cham mat, cham soc, khao sat
song cua » cong cua, dong cua, huong cua
sang cua » mang cua, hang cua, tang cua
sat van » sat va, hat van, hoat van
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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) OR (tu san)) ky dang xa hoi. hieu vu cham sat van thanh ((sang cua) or (song cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky dang xa hoi. hieu vu cham sat van thanh ((sang cua) OR (song cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky dang xa hoi. hieu vu cham sat van thanh ((sang cua) or (song cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky dang xa hoi. hieu vu cham sat van thanh ((sang cua) or (song cua)) tre*.