Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
nang mai » nang ma, nang tai, lang mai
thanh de » hanh de, thanh ve, thanh do
thuc van » thuc vat, thuc dan, thuc va
ve chat » va chat, van chat
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve cau
de cua » le cua, te cua, dieu cua
ve tai » te tai, de tai, le 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 tai))) or (ve chat)) thuc van thanh de cua 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 tai))) OR (ve chat)) thuc van thanh de cua 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 tai))) or (ve chat)) thuc van thanh de cua triet*".