Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
hanh lai » hanh lam, hanh tai, thanh lap
cham doc » cham soc, chat doc, chau doc
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach ty, sach kem
thi van » thi lan, thi hanh, thi nang
cao hoc » co hoc, cho hoc, chat hoc
doc va » duoc va, hoc va, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sach y)) nang cao hoc. ((thi van) or (thi cong)) cham doc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang cao hoc. ((thi van) OR (thi cong)) cham doc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach y)) nang cao hoc. ((thi van) or (thi cong)) cham doc va hanh lai cua tre*.