Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
hoang van » hang va
hanh kien » danh kien, anh kien, thanh vien
lang van » dang van, tang van, giang van
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
te sach » toc sach
hieu vu » hieu va, hieu ve, hieu su
vu nham » vu kham, vu cham, sua nham
kien ve » kien de, kien va, dien ve
sach o » sach lo, sac o, sach y

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach o ((lang van) OR (hoang van)) hoi. hieu vu nham thuc van hanh kien ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach o ((lang van) OR (hoang van)) hoi. hieu vu nham thuc van hanh kien ve triet".
• Adding a wildcard symbol may retrieve word variants: te sach o ((lang van) OR (hoang van)) hoi. hieu vu nham thuc van hanh kien ve triet*.