Perhaps you should try some spelling variations:
van chat » cao chat
bo sach » co sach, hoc sach
sach lo » sach dao, sach doi, sach hoi
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
ca tren » cau tren, cu tren, la tren
lo nang » ho nang, ly nang, loai nang
tuc va » thuc va, truc va, tuc xa
van ha » van hoa, van hanh, van phan
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: bo sach lo nang x hoi. thien ((van chat) or (van ha)) tuc va hanh vi ((cua tre) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach lo nang x hoi. thien ((van chat) OR (van ha)) tuc va hanh vi ((cua tre) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: bo sach lo nang x hoi. thien ((van chat) or (van ha)) tuc va hanh vi ((cua tre) or (ca tren))*.