Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
thien van » thi van
cau tren » cu tren, dau tren, ca tren
toc sach » hoc sach, doc sach, thuoc sach
thuoc va » thuc va, thuoc ma, thuong va
van tai » von tai, van tuan
dan vai » dan va, dan tai, dan vat
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
van lam » van nam

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) OR (toc sach)) ky lang xa hoi. thien van lam thuoc va ((dan vai) or (van tai)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky lang xa hoi. thien van lam thuoc va ((dan vai) OR (van tai)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky lang xa hoi. thien van lam thuoc va ((dan vai) or (van tai)) cau tren".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky lang xa hoi. thien van lam thuoc va ((dan vai) or (van tai)) cau tren*.