Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
thanh vi » hanh vi, thanh va, thanh ve
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » cac nuoc, chat xuc, cac cuoc
vi cua » vai cua, di cua
cua su » qua su

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)) tu nang xa hoi. hieu ve ((cac xuc) or (cam xuc)) van thanh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu nang xa hoi. hieu ve ((cac xuc) OR (cam xuc)) van thanh vi cua su.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) tu nang xa hoi. hieu ve ((cac xuc) or (cam xuc)) van thanh vi cua su*.