Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
hieu van » hieu va, thien van
hieu ve » hieu va
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
hanh le » thanh le, hanh ve, hanh de
su sach » so sach, vu sach
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty lang xa hoi. ((((hieu ve) OR (hieu van))) or (lieu va)) nam thuc van hanh le cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang xa hoi. ((((hieu ve) OR (hieu van))) OR (lieu va)) nam thuc van hanh le cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty lang xa hoi. ((((hieu ve) OR (hieu van))) or (lieu va)) nam thuc van hanh le cua triet*".