Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
hieu cao » chieu cao, hieu cac, hieu ca
hanh dai » hanh tai, hanh dao, vanh dai
sach ty » sach y, sach tu, xach tay
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) or (sach thu)) nang o hoi. hieu cao chat ((xuc van) OR (duc van)) hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang o hoi. hieu cao chat ((xuc van) OR (duc van)) hanh dai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) nang o hoi. hieu cao chat ((xuc van) OR (duc van)) hanh dai cua triet*".