Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hieu ve » hieu va, hieu van
va tinh » may tinh
mai hoi » mai khoi, dai hoi, lai hoi
de cua » le cua, te cua, dieu cua
vu sai » vu hai, vu san, vu dai
ve nam » he nam, va nam, le nam
sai ky » sac ky
ma hoi » xa hoi, ma hoa, me hoi
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sai ky nang ((ma hoi) OR (mai hoi)). hieu ve nam thuoc ((va tinh) or (gia thanh)) de cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky nang ((ma hoi) OR (mai hoi)). hieu ve nam thuoc ((va tinh) OR (gia thanh)) de cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sai ky nang ((ma hoi) OR (mai hoi)). hieu ve nam thuoc ((va tinh) or (gia thanh)) de cua tu".
• Adding a wildcard symbol may retrieve word variants: vu sai ky nang ((ma hoi) OR (mai hoi)). hieu ve nam thuoc ((va tinh) or (gia thanh)) de cua tu*.