Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
hanh lai » hanh lam, hanh tai, thanh lap
chat xu » chat xuc, chao xu, chat huu
va hanh » van hanh, va thanh, va danh
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
xu va » xu van, tu va, su 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: su ((sach ty) or (sach y)) nang x hoi. hieu ve chat xu va hanh lai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang x hoi. hieu ve chat xu va hanh lai ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang x hoi. hieu ve chat xu va hanh lai ((cua triet) or (cua viet))*.