Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
cao tuc » dao tuc, cao duc, cao suc
tai cua » tai cuc, tri cua, dai cua
tuc van » thuc van, truc van, tuc va
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay
va cao » va cac, va co, va dao

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 tu) OR (sach ty)) nang xa hoi. hieu va cao tuc van hanh ((tai cua) or (thai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cao tuc van hanh ((tai cua) OR (thai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cao tuc van hanh ((tai cua) or (thai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cao tuc van hanh ((tai cua) or (thai cua)) triet*.