Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac cua » cach cua, cac qua, ca cua
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
ve cac » va cac, vien cac

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 lang xa hoi. hieu ve cac cua ban hanh vai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang xa hoi. hieu ve cac cua ban hanh vai ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu ve cac cua ban hanh vai ((cua tre) or (su triet))*.