Perhaps you should try some spelling variations:
nhan luc » nang luc
ban hanh » ban hang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hau luc » hau loc, cau luc, hieu luc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te cua » le cua, de 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. lieu va ((hau luc) or (nhan luc)) ban hanh ((te cua) OR (tue cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. lieu va ((hau luc) OR (nhan luc)) ban hanh ((te cua) OR (tue cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. lieu va ((hau luc) or (nhan luc)) ban hanh ((te cua) OR (tue cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. lieu va ((hau luc) or (nhan luc)) ban hanh ((te cua) OR (tue cua)) triet*.