Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
toc sach » hoc sach, doc sach, thuoc sach
xa nhanh » xa thanh, xa khanh, day nhanh
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
cac toi » cac thoi
cac tuc » cac toc, cac tu, cac tac
ca hoi » cau hoi, cua hoi, xa hoi
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) or (thi thanh)) ca hoi. hieu va ((cac tuc) or (cac toi)) xa nhanh hai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((thi hanh) OR (thi thanh)) ca hoi. hieu va ((cac tuc) OR (cac toi)) xa nhanh hai va triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ((thi hanh) or (thi thanh)) ca hoi. hieu va ((cac tuc) or (cac toi)) xa nhanh hai va triet*.