Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, dua tren
luc van » luoc van, luu van, duc van
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
lang ha » long ha
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, va cam

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 y ((nang xa) or (lang ha)) hoi. hieu ve cam luc van hanh vai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (lang ha)) hoi. hieu ve cam luc van hanh vai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (lang ha)) hoi. hieu ve cam luc van hanh vai ((cua tre) or (cua triet))*.