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
danh ca » doanh cua, danh cho, danh gia
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua 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 nang xa hoi. hieu va cac duc va ((danh ca) or (dan ca)) ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu va cac duc va ((danh ca) OR (dan ca)) ((cua tu) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu va cac duc va ((danh ca) or (dan ca)) ((cua tu) or (cua cu))*.