Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc manh
su sai » su tai, su hai, su dai
sai ky » sac 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 sai ky dang xa hoi. hieu ve pham duc van hanh ((thai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. hieu ve pham duc van hanh ((thai cua) OR (than cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu ve pham duc van hanh ((thai cua) or (than cua)) tre*.