Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
chat xuc » chat huu, cam xuc, chao xu
hieu cao » chieu cao, hieu cac, hieu ca
sach thu » sach thue, sach thieu, sach tham
sach ty » sach y, sach tu, xach tay
nang o » nang co, nang ho, nang ro
dai va » mai va
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 hanh) OR (ban hanh)) dai va 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 hanh) OR (ban hanh)) dai va 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 hanh) OR (ban hanh)) dai va triet*".