Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
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
duc van » duc va, duc manh, duc phan
cua tre » cua te, cuu tre, cua triet
su hai » su tai
hai ky » thai ky, hoi ky, hai ly
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 hai ky dang xa hoi. hieu ve cam ((duc van) OR (duc tan)) ((nhanh thai) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su hai ky dang xa hoi. hieu ve cam ((duc van) OR (duc tan)) ((nhanh thai) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su hai ky dang xa hoi. hieu ve cam ((duc van) OR (duc tan)) ((nhanh thai) or (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su hai ky dang xa hoi. hieu ve cam ((duc van) OR (duc tan)) ((nhanh thai) or (hanh tai)) cua tre*.