Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
lam duoc » nam duoc, luat duoc, tao duoc
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
tu ban » thu ban, te ban
va cua » va chua, via cua, ca cua
tu san » thu san, tu can, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu ban)) ky nang ma hoi. hieu van ((lam duoc) OR (lam thuoc)) va thanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky nang ma hoi. hieu van ((lam duoc) OR (lam thuoc)) va thanh va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu ban)) ky nang ma hoi. hieu van ((lam duoc) OR (lam thuoc)) va thanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky nang ma hoi. hieu van ((lam duoc) OR (lam thuoc)) va thanh va cua triet*.