Perhaps you should try some spelling variations:
phap trinh » phap tinh, lap trinh, phap sinh
thuoc phap » thuoc phai, thuc pham, hoc phap
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
trinh va » trinh van, trinh vat, trinh ve
lang van » dang van, tang van, hoang van
van lam » van nam
toc sac » toc sach, toc san, hoc sach
lang xa » lang ha, dang xay
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky
va cuu » va cau, va chu, va huu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky ((((lang xa) OR (lang van))) OR (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky ((((lang xa) OR (lang van))) or (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre~".
• Adding a wildcard symbol may retrieve word variants: toc sac ky ((((lang xa) OR (lang van))) or (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre*.