Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cua tre » cua te, cuu tre, dua tren
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
ve cham » va cham, vu cham, ve chim
hang ma » hang va, hang ca, tang ma
ve chat » va chat, van chat
y hang » ly hang, ty hang, yu hang
loc va » hoc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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 y hang ma hoi. hieu ((ve cham) or (ve chat)) loc va hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y hang ma hoi. hieu ((ve cham) OR (ve chat)) loc va hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y hang ma hoi. hieu ((ve cham) or (ve chat)) loc va hanh va ((cua tre) or (cua triet))*.