Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
va thanh » ban thanh, va tinh, le thanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
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: vu sac ky nang xa hoi. hieu ve nam thuoc ((va thanh) or (gia thanh)) vi ((cua tu) OR (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang xa hoi. hieu ve nam thuoc ((va thanh) OR (gia thanh)) vi ((cua tu) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang xa hoi. hieu ve nam thuoc ((va thanh) or (gia thanh)) vi ((cua tu) OR (cua cu))".
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang xa hoi. hieu ve nam thuoc ((va thanh) or (gia thanh)) vi ((cua tu) OR (cua cu))*.