Perhaps you should try some spelling variations:
suu triet » su triet, cuu thiet, cua triet
hanh dao » lanh dao, thanh dat, thanh dam
dao suu » dao huu, da suu
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ang xa » lang xa, mang xa, dang xay
ty ang » ty xang, ty hang, ty anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ang xa hoi. ((hieu ve) or (hieu qua)) cau ((thuc va) or (hoc dan)) hanh dao suu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ang xa hoi. ((hieu ve) OR (hieu qua)) cau ((thuc va) OR (hoc dan)) hanh dao suu triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ang xa hoi. ((hieu ve) or (hieu qua)) cau ((thuc va) or (hoc dan)) hanh dao suu triet*.