Perhaps you should try some spelling variations:
sinh cau » trinh cau, sinh vat, sinh va
vinh cau » vinh cuu, minh cau, tinh cau
hieu van » hieu va, thien van, lieu va
ca thuoc » cay thuoc, cua thuoc, cao thuoc
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
va danh » va dinh, va hanh, dia danh
va dan » ca dan, va dao, va dau
van ca » van cau, van cua, dan ca

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 ly lang xa hoi. hieu van ca thuoc ((va danh) or (va dan)) ((vinh cau) OR (sinh cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly lang xa hoi. hieu van ca thuoc ((va danh) OR (va dan)) ((vinh cau) OR (sinh cau)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly lang xa hoi. hieu van ca thuoc ((va danh) or (va dan)) ((vinh cau) OR (sinh cau)) tren*".