Perhaps you should try some spelling variations:
minh viet » ninh viet, dinh viet, kinh viet
doc chat » hoc chat, hop chat, toc cham
viet cua » viec cua, viet ca, viet qua
tu cach » tu cac
xuc van » duc van, luc van, vuc van
du chat » duoc chat, dung chat, cuu chat
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
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: ((tu cach) or (so sach)) ky nang x hoi. hieu ((du chat) OR (doc chat)) xuc van minh viet cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky nang x hoi. hieu ((du chat) OR (doc chat)) xuc van minh viet cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (so sach)) ky nang x hoi. hieu ((du chat) OR (doc chat)) xuc van minh viet cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky nang x hoi. hieu ((du chat) OR (doc chat)) xuc van minh viet cua tre*.