Perhaps you should try some spelling variations:
cham sat » cham mat, cham soc, khao sat
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
va cham » va chat, va tham
sat van » sat va, hat van, hoat van
van anh » van thanh, tuan anh, van minh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y nang » ky nang, v nang, may nang
anh vi » hanh vi, anh va, anh ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y nang) OR (ly nang)) xa hoi. lieu va cham sat van anh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) xa hoi. lieu va cham sat van anh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (ly nang)) xa hoi. lieu va cham sat van anh vi ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (ly nang)) xa hoi. lieu va cham sat van anh vi ((cuu tre) or (cua tre))*.