Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
dac nhan » cac nhan, danh nhan, ca nhan
vu sach » vu bach, su sach, vu khach
ve chat » va chat, van chat
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
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.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang x hoi. hieu ((ve cam) or (ve chat)) thuc ((day thanh) or (dac nhan)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x hoi. hieu ((ve cam) OR (ve chat)) thuc ((day thanh) OR (dac nhan)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x hoi. hieu ((ve cam) or (ve chat)) thuc ((day thanh) or (dac nhan)) di cua tre*.