Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
va cham » va chat, va tham
vu nang » vuc nang, va nang, vu dang
duc van » duc va, duc tan, duc manh
di cua » dai cua, doi cua, de cua
cua te » cua tu
va cam » va cac, va cao, va cai
v nang » va nang, van nang, voi nang

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 ((v nang) or (vu nang)) xa hoi. lieu ((va cam) or (va cham)) duc van thanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((v nang) OR (vu nang)) xa hoi. lieu ((va cam) OR (va cham)) duc van thanh di cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((v nang) or (vu nang)) xa hoi. lieu ((va cam) or (va cham)) duc van thanh di cua te*.