Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
xa thanh » va thanh, ha thanh, ta thanh
sach thi » sach thu, sach tai, sach thieu
va triet » va thiet, va trien, ve triet
hanh cat » hanh cac, hanh cham, hanh luat
cac toc » cac toi, cac nuoc, cac thoi
hanh ca » hanh cac, hanh cua, hanh cad
cac tu » cac thu, cach tu, cac du
hai va » hai van, thai va, hoi va

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