Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
hieu van » hieu va, thien van, lieu va
van cao » van dao, van bao, van hao
cao duc » dao duc, cao suc, giao duc
va lang » va nang, hoa lang
lang va » lang van, hang va, lang ha
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, x ho

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 san)) y nang x hoi. hieu van cao duc va lang va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) y nang x hoi. hieu van cao duc va lang va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat san)) y nang x hoi. hieu van cao duc va lang va cua tre*.