Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
van thanh » ban thanh, van tuan
thanh va » thanh van, hanh va, thanh ha
va chat » van chat, va phat, cao chat
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
va cua » va chua, via cua, ca cua
cua te » cua tu
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v 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) OR (thuat lanh)) y nang xa hoi. lieu ((va cam) or (va chat)) duc van thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lanh)) y nang xa hoi. lieu ((va cam) OR (va chat)) duc van thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) OR (thuat lanh)) y nang xa hoi. lieu ((va cam) or (va chat)) duc van thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) OR (thuat lanh)) y nang xa hoi. lieu ((va cam) or (va chat)) duc van thanh va cua te*.