Perhaps you should try some spelling variations:
duc thuan » duc tan, duc thang, duc thanh
duc phan » dung phan, duc thang, duc phung
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x hoi. ((hieu ve) or (lieu va)) cam ((duc thuan) or (duc phan)) anh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. ((hieu ve) OR (lieu va)) cam ((duc thuan) OR (duc phan)) anh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. ((hieu ve) or (lieu va)) cam ((duc thuan) or (duc phan)) anh vi cua te*.