Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
thien van » thi van
thuoc va » thuc va, thuoc ma, thuong va
cau tren » cu tren, dau tren, ca tren
ky tang » ky nang, ky dang, kho tang
van lam » van nam
ky lang » ky nang, ky dang, tay lang
dan vai » dan va, dan vat, den vai
dan tai » van tai, dan thi, han tai
te sach » toc sach

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