Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
van hanh » van thanh, ban hanh, van anh
than cua » nhan cua, thai cua, ban cua
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao

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 ky dang xa hoi. hieu ((ve cao) or (ve bao)) duc van hanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. hieu ((ve cao) OR (ve bao)) duc van hanh than cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu ((ve cao) or (ve bao)) duc van hanh than cua tre*.