Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
thanh ke » thanh ket, thanh ve, thanh de
cau tren » dau tren, ca tren, cau treo
te sach » toc sach
luc van » luoc van, luu van, duc van
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
ve cau » ke cau, va cau, ve cac
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ve cau luc van thanh ke ((cua triet) or (((cau tren) OR (cu tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ve cau luc van thanh ke ((cua triet) OR (((cau tren) OR (cu tren)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ve cau luc van thanh ke ((cua triet) or (((cau tren) OR (cu tren))))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve cau luc van thanh ke ((cua triet) or (((cau tren) OR (cu tren))))*.