Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
sach uu » sach luu, sach tu, sach xu
sach ty » sach y, sach tu, sach thu
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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) or (sach uu)) nang x hoi. hieu van cam xuc va hanh lai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach uu)) nang x hoi. hieu van cam xuc va hanh lai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach uu)) nang x hoi. hieu van cam xuc va hanh lai ((cua tre) or (cua triet))*.