Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
lang mai » lang dai, lang hai, lang man
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » va cham, ve chat, vu cham
y lang » o lang, _ lang, tay lang
ve cai » va cai, ve cac, ve tai
tu van » tu va
de cua » le cua, te cua, dieu 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 y lang mai hoi. hieu ((ve cai) or (ve cham)) tu van thanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang mai hoi. hieu ((ve cai) OR (ve cham)) tu van thanh de cua triet*.