Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
cay phoi » cap phoi, tay hoi, cay cho
va cham » va chat, va tham
xay hoi » xa hoi, tay hoi, gay thoi
duc van » duc va, duc tan, duc manh
vi cua » vai cua, di cua
cua te » cua tu
y dang » ky dang, 2 dang, _ dang
va cam » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y dang ((xay hoi) OR (cay phoi)). lieu ((va cam) or (va cham)) duc van thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y dang ((xay hoi) OR (cay phoi)). lieu ((va cam) OR (va cham)) duc van thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y dang ((xay hoi) OR (cay phoi)). lieu ((va cam) or (va cham)) duc van thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach y dang ((xay hoi) OR (cay phoi)). lieu ((va cam) or (va cham)) duc van thanh vi cua te*.