Perhaps you should try some spelling variations:
lieu khoa » lieu hoc
nam thuoc » nam thuc, nam thu, nha thuoc
hang tai » hang va, dung tai
lieu nha » lieu phap, lieu tham, lieu phan
hanh tai » thanh tai, han tai, hinh tai
thuoc xa » thuoc ma, thuoc va, thuoc la
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
tu sac » tu sach, tu cac, tu san

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. ((lieu nha) OR (lieu khoa)) nam thuoc xa ((hanh tai) or (hang tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. ((lieu nha) OR (lieu khoa)) nam thuoc xa ((hanh tai) OR (hang tai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. ((lieu nha) OR (lieu khoa)) nam thuoc xa ((hanh tai) or (hang tai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. ((lieu nha) OR (lieu khoa)) nam thuoc xa ((hanh tai) or (hang tai)) cuu tre*.