Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thi » sach thu, sach tai, sach thieu
toc sach » hoc sach, doc sach, thuoc sach
hanh tu » anh tu, danh tu
hanh xa » hanh va, hanh ma, hanh xu
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
xa hanh » xa thanh, xa khanh, va hanh
hieu va » lieu va, hieu qua
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: toc sach thi ((hanh xa) or (hanh tu)) hoi. hieu va ((cac tuc) or (cac toc)) xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thi ((hanh xa) OR (hanh tu)) hoi. hieu va ((cac tuc) OR (cac toc)) xa hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach thi ((hanh xa) or (hanh tu)) hoi. hieu va ((cac tuc) or (cac toc)) xa hanh vi cua triet*.