Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang x hoi. hieu van pham ((duc ban) OR (duc van)) thanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat lanh)) ky nang x hoi. hieu van pham ((duc ban) OR (duc van)) thanh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang x hoi. hieu van pham ((duc ban) OR (duc van)) thanh di cua tre*.