Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
lo ban » co ban, ly ban
lo van » le van, vo van, so van
vi cua » vai cua, di cua

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 ky lang xa hoi. hieu ve cac ((lo ban) or (lo van)) thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ve cac ((lo ban) OR (lo van)) thanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu ve cac ((lo ban) or (lo van)) thanh vi cua triet*.