Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, tao duoc
ha thanh » va thanh, pham thanh, phan thanh
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
y nang » ky nang, ly nang, v nang
co cua » con cua, cong cua, cuoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang cao hoi. hieu van ((lam duoc) or (lam thuoc)) ha thanh ((ca cua) OR (co cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang cao hoi. hieu van ((lam duoc) OR (lam thuoc)) ha thanh ((ca cua) OR (co cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang cao hoi. hieu van ((lam duoc) or (lam thuoc)) ha thanh ((ca cua) OR (co cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach y nang cao hoi. hieu van ((lam duoc) or (lam thuoc)) ha thanh ((ca cua) OR (co cua)) tre*.