Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
toc sac » toc sach, toc san, hoc sach
hieu va » lieu va, hieu qua
hai cua » thai cua, dai cua, hoi cua
duc ban » duc tan, duc van, dua ban
hieu ve » hieu van
tao hoi » tao khoi, tao boi, thao hoc
tay hoi » tay ho, tay thai
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky sang ((tao hoi) or (tay hoi)). ((hieu ve) or (hieu va)) pham duc ban thanh hai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky sang ((tao hoi) OR (tay hoi)). ((hieu ve) OR (hieu va)) pham duc ban thanh hai cua tu.
• Adding a wildcard symbol may retrieve word variants: toc sac ky sang ((tao hoi) or (tay hoi)). ((hieu ve) or (hieu va)) pham duc ban thanh hai cua tu*.