Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh va, hanh tai, hanh van
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
tuc va » thuc va, truc va, tuc xa
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: so sach y ((nang ma) or (tang ma)) hoi. hieu ve cam tuc va ((hanh vai) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang ma) OR (tang ma)) hoi. hieu ve cam tuc va ((hanh vai) OR (hanh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang ma) or (tang ma)) hoi. hieu ve cam tuc va ((hanh vai) or (hanh vi)) cua triet*.