Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
thuoc lap » thuoc la, thuoc luan, thuoc phap
trinh vat » trinh van, trinh luat, sinh vat
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
van lam » van nam
vat cua » mat cua, bat cua, dat cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((lang xa) or (nang x)) hoi. hieu van lam thuoc lap trinh vat cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (nang x)) hoi. hieu van lam thuoc lap trinh vat cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) or (nang x)) hoi. hieu van lam thuoc lap trinh vat cua triet*.