Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
hieu cua » hieu qua, dieu cua, bieu cua
hang ca » hang va, nang cao, hang tai
sach ly » sach y, sach ty, sach hay
cac xuc » cam xuc, cac nuoc, chat xuc
sach lo » sach dao, sach doi, sach hoi
ca hoi » cau hoi, cua hoi, xa hoi
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) or (sach lo)) hang ca hoi. hieu cua cac xuc ((van hanh) or (van thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach lo)) hang ca hoi. hieu cua cac xuc ((van hanh) OR (van thanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach lo)) hang ca hoi. hieu cua cac xuc ((van hanh) or (van thanh)) vi cua triet*.