Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
van thanh » ban thanh, van tuan
va triet » va thiet, va trien, ve triet
nang mai » nang ma, nang tai, lang mai
thanh de » hanh de, thanh ve, thanh do
thuc van » thuc vat, thuc dan, thuc va
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » va cham, ve chat, vu cham
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve tai

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 y nang mai hoi. hieu ((ve cai) or (ve cham)) thuc van thanh de ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang mai hoi. hieu ((ve cai) OR (ve cham)) thuc van thanh de ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang mai hoi. hieu ((ve cai) or (ve cham)) thuc van thanh de ((cua triet) OR (va triet))*".