Perhaps you should try some spelling variations:
thieu thanh » thien thanh, thi thanh, thu thanh
thanh tai » thanh hai, thanh toan, doanh tai
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
thanh ca » thanh cha, thanh cac, thanh ha
xa thanh » va thanh, ha thanh, ta thanh
hieu va » lieu va, hieu qua
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
tai cua » thai cua, tai cuc, tri cua
ca hoi » cau hoi, cua hoi, xa hoi

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 thieu thanh ca hoi. hieu va ((cac tuc) or (cac toc)) xa thanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thieu thanh ca hoi. hieu va ((cac tuc) OR (cac toc)) xa thanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach thieu thanh ca hoi. hieu va ((cac tuc) or (cac toc)) xa thanh tai cua triet*.