Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
hieu cua » hieu qua, dieu cua, bieu cua
sach ky » sac ky, sach y, sach ty
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
te sach » toc sach
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
ve cua » le cua, de cua, te 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 ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu cua cac luc van thanh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (((nang ma) OR (sang ma)))) hoi. hieu cua cac luc van thanh ve cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu cua cac luc van thanh ve cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu cua cac luc van thanh ve cua triet*.