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
trinh va » trinh van, trinh vat, trinh ve
hieu van » hieu va, thien van, lieu va
van lam » van nam
cuu tre » cua tre, cau tren, cau treo
lang xa » lang ha, dang xay, lang van
sac ky » cac ky
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sac ky) OR (sai ky)) ((lang xa) or (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sac ky) OR (sai ky)) ((lang xa) 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) OR (sai ky)) ((lang xa) or (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sac ky) OR (sai ky)) ((lang xa) or (nang x)) hoi. hieu van lam thuoc phap trinh va cuu tre*.