Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
cau treo » cau theo, cau tren, cau triet
hieu van » thien van, lieu va, hieu ve
thuoc va » thuc va, thuoc ma, thuong va
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty lang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va ((danh vi) or (dinh vi)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va ((danh vi) OR (dinh vi)) cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty lang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va ((danh vi) or (dinh vi)) cau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ty lang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va ((danh vi) or (dinh vi)) cau treo*.