Perhaps you should try some spelling variations:
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, dua ban
hai cua » thai cua, hoi cua, lai cua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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 nang xa hoi. hieu ((ve cam) or (va cam)) duc ban hanh ((hai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ((ve cam) OR (va cam)) duc ban hanh ((hai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ((ve cam) or (va cam)) duc ban hanh ((hai cua) or (dai cua)) tre*.