Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac nuoc
luc van » luoc van, luu van, duc van

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 y ((dang xay) or (van xay)) hoi. hieu va cac luc van hanh lai chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((dang xay) OR (van xay)) hoi. hieu va cac luc van hanh lai chau triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((dang xay) or (van xay)) hoi. hieu va cac luc van hanh lai chau triet*.