Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
toc sac » toc sach, toc san, hoc sach
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
duc ban » duc tan, duc van, dua ban
hieu ve » hieu van
tai hoi » tai khoi, tai hai, tai hoe
dai hoi » dai hoc, dai hai, dai moi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
cua te » cua tu

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 ((tai hoi) or (dai hoi)). ((hieu ve) or (hieu va)) pham duc ban thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky sang ((tai hoi) OR (dai hoi)). ((hieu ve) OR (hieu va)) pham duc ban thanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: toc sac ky sang ((tai hoi) or (dai hoi)). ((hieu ve) or (hieu va)) pham duc ban thanh lai cua te*.