Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
vu khach » vu khanh, vu khac, vay khach
thanh vi » hanh vi, thanh va, thanh ve
xuc van » duc van, luc van, vuc van
hai xuc » hai cuc, hai xu, chat xuc
qua hai » qua hoat
tu nang » tru nang, tu nong, tu lang
cua tre » cua te, cuu tre, cua triet
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: vu khach ((((tu nang) OR (tu nano))) or (truc nano)) xa hoi. hieu qua hai xuc van thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ((((tu nang) OR (tu nano))) OR (truc nano)) xa hoi. hieu qua hai xuc van thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach ((((tu nang) OR (tu nano))) or (truc nano)) xa hoi. hieu qua hai xuc van thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu khach ((((tu nang) OR (tu nano))) or (truc nano)) xa hoi. hieu qua hai xuc van thanh vi cua tre*.