Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hien cac » thien cac, vien cac, hieu cac
doc sach » hoc sach, toc sach, nuoc sach
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cac lo » cac lop, cac co, cac bo
lo ban » co ban, lo van, ly ban
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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: ((tu sach) OR (doc sach)) ky nang xa hoi. bieu hien cac lo ban thanh vai ((cua tu) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (doc sach)) ky nang xa hoi. bieu hien cac lo ban thanh vai ((cua tu) OR (cua su))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (doc sach)) ky nang xa hoi. bieu hien cac lo ban thanh vai ((cua tu) OR (cua su))*.