Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nam thuc » nam thuoc, am thuc, nam thu
ve triet » va trien, su triet
nang xa » nang x, nang ma, ang xa
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
hieu ly » hieu ky, lieu ly, dieu ly
thuc va » thuc vat, thuc dan, thuc day
va dat » va dao, va dau, va dap
dai ve » dap ve, dau ve, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nganh y ((((nang xa) OR (mang xa))) or (lang xa)) hoi. hieu ly nam thuc va dat dai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh y ((((nang xa) OR (mang xa))) OR (lang xa)) hoi. hieu ly nam thuc va dat dai ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nganh y ((((nang xa) OR (mang xa))) or (lang xa)) hoi. hieu ly nam thuc va dat dai ve triet".
• Adding a wildcard symbol may retrieve word variants: hoc nganh y ((((nang xa) OR (mang xa))) or (lang xa)) hoi. hieu ly nam thuc va dat dai ve triet*.