Perhaps you should try some spelling variations:
van chat » cao chat
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((cac ky) or (sach y)) nang xa hoi. hieu ((van cam) or (van chat)) truc va dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cac ky) OR (sach y)) nang xa hoi. hieu ((van cam) OR (van chat)) truc va dan vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((cac ky) or (sach y)) nang xa hoi. hieu ((van cam) or (van chat)) truc va dan vi cua tre*.