Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
chat soc » cham soc, chat hoc, chat doc
hieu ve » hieu va, hieu van
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
ve chat » va chat, van chat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc va
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (((toc sach) OR (thuoc sach)))) ky nang xa hoi. hieu ve chat soc va tinh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (((toc sach) OR (thuoc sach)))) ky nang xa hoi. hieu ve chat soc va tinh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (((toc sach) OR (thuoc sach)))) ky nang xa hoi. hieu ve chat soc va tinh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (((toc sach) OR (thuoc sach)))) ky nang xa hoi. hieu ve chat soc va tinh di cua tre*.