Perhaps you should try some spelling variations:
chat truc » cau truc, chat xuc
va triet » va thiet, va trien, ve triet
sach thu » sach thue, sach thieu, sach tham
hanh dao » lanh dao, thanh dat, thanh dam
van hanh » van thanh, ban hanh, van anh
truc van » truc va, thuc van, truc ban
van chat » cao chat
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
sac ky » cac ky, sai ky
dao va » dao van, tao va, do va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach thu) or (sac ky)) ((nang xa) OR (lang xa)) hoi. hieu van chat truc van hanh dao va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sac ky)) ((nang xa) OR (lang xa)) hoi. hieu van chat truc van hanh dao va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) or (sac ky)) ((nang xa) OR (lang xa)) hoi. hieu van chat truc van hanh dao va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sac ky)) ((nang xa) OR (lang xa)) hoi. hieu van chat truc van hanh dao va triet*.