Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
cam duc » cao duc, pham duc, nam duoc
cuc tre » duc tre, cua tre, cuu tre
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky dang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (cam xuc)) van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xa hoi. ((hieu ve) OR (hieu qua)) ((cam duc) OR (cam xuc)) van hanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky dang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (cam xuc)) van hanh tai cuc tre*.