Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
chat xuc » chat huu, cam xuc, chao xu
hieu van » hieu va, thien van, lieu va
van chat » cao chat
cho hoc » co hoc, khoa hoc
cho hoi » cho moi, cho doi, co hoi
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
y hang » ly hang, ty hang, yu hang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y hang ((cho hoi) or (cho hoc)). hieu van chat xuc va hanh vi ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y hang ((cho hoi) OR (cho hoc)). hieu van chat xuc va hanh vi ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y hang ((cho hoi) or (cho hoc)). hieu van chat xuc va hanh vi ((su triet) or (ve triet))*.