Perhaps you should try some spelling variations:
thanh tap » thanh lap, thanh tai, thanh tay
van thanh » ban thanh, van tuan
toc sac » toc sach, toc san, hoc sach
hieu va » lieu va, hieu qua
tap cua » tap quan, tiep cua
duc van » duc va, duc tan, duc manh
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.

• 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 van thanh tap 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 van thanh tap cua tu*.