Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
doi cua » dai cua, hoi cua
ve cao » va cao, ve bao, ve cac
va dan » ca dan, va dao, va dau
di cua » dai cua, de cua, do 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 ty nang xa hoi. hieu ve cao duc va dan ((di cua) or (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ve cao duc va dan ((di cua) OR (doi cua)) triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ve cao duc va dan ((di cua) or (doi cua)) triet*.