Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su dai, su mai
su hai » su tai
ve cam » ve cham, ve cac, va cam

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

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