Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
van hai » van ha, van chat, van phan
hai xuc » hai cuc, hai xu, chat xuc
xuc van » duc van, luc van, vuc van
lai cua » dai cua, hai cua, lai chau

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 ky ((nang xa) or (nang x)) hoi. thien van hai xuc van hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (nang x)) hoi. thien van hai xuc van hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (nang x)) hoi. thien van hai xuc van hanh lai cua triet*.