Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
dat khanh » van khanh, duy khanh
xa khanh » xa thanh, van khanh, hoa khanh
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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 ((ma hoi) or (xa hoi)). hieu va nam thuoc ((xa khanh) OR (dat khanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((ma hoi) OR (xa hoi)). hieu va nam thuoc ((xa khanh) OR (dat khanh)) vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((ma hoi) or (xa hoi)). hieu va nam thuoc ((xa khanh) OR (dat khanh)) vai cua te*".