Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
nang mai » nang ma, nang tai, lang mai
thanh vi » hanh vi, thanh va, thanh ve
xa thanh » va thanh, ha thanh, ta thanh
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
nam tuc » nam thuc, nam truc, nam truoc
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
nam tu » nam thu, nam thuc
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang mai hoi. hieu va ((((nam tuc) OR (nam thuoc))) or (nam tu)) xa thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang mai hoi. hieu va ((((nam tuc) OR (nam thuoc))) OR (nam tu)) xa thanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang mai hoi. hieu va ((((nam tuc) OR (nam thuoc))) or (nam tu)) xa thanh vi cuu tre*".