Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
cau treo » cau theo, cau tren, cau triet
dinh hai » dinh thai, tinh hai, dinh tai
thuoc va » thuc va, thuoc ma, thuong va
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
van lam » van nam
vu sach » vu bach, vu khach
dinh ha » dinh hoa, dinh ba, tinh ha
su sach » so sach
ma hoi » mai hoi, xa hoi, ma hoa

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) or (vu sach)) ly nang ma hoi. hieu van lam thuoc va ((dinh hai) OR (dinh ha)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly nang ma hoi. hieu van lam thuoc va ((dinh hai) OR (dinh ha)) cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ly nang ma hoi. hieu van lam thuoc va ((dinh hai) OR (dinh ha)) cau treo*".