Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
va danh » va dinh, va dan, va hanh
danh co » danh cho, doanh co, anh co
sac ky » cac ky
co cua » con cua, ca cua, cong cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) nang xa hoi. hieu va cac duc va danh co cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang xa hoi. hieu va cac duc va danh co cua su.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) nang xa hoi. hieu va cac duc va danh co cua su*.