Perhaps you should try some spelling variations:
thi hanh » thi thanh
sach thu » sach thue, sach thieu, sach tham
hanh ca » hanh cac, hanh cat, hanh cua
va hanh » van hanh, va thanh, va danh
cau duc » cao duc, cau luc, chu duc
thi van » thi lan, thi nang
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
ca cua » co cua
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 ky) or (sach thu)) nang x hoi. ((thi van) or (thi hanh)) cau duc va hanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach thu)) nang x hoi. ((thi van) OR (thi hanh)) cau duc va hanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach thu)) nang x hoi. ((thi van) or (thi hanh)) cau duc va hanh ca cua tre*.