Perhaps you should try some spelling variations:
quoc ban » quoc bao, quoc lan, quoc quan
xuc van » duc van, luc van, xuc ban
cuu tre » cua tre, cau tren, cau treo
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam
vi cuu » vi luu, vinh cuu
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: tu sai ky nang x hoi. hieu ((ve cam) or (va cac)) ((xuc van) or (quoc ban)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang x hoi. hieu ((ve cam) OR (va cac)) ((xuc van) OR (quoc ban)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang x hoi. hieu ((ve cam) or (va cac)) ((xuc van) or (quoc ban)) hanh vi cuu tre*.