Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cac qua » cau qua, tac quan
qua gia » quy gia, cua gia, quang gia
va chu » va che, va cau
va chi » van chi, va che, va cai

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 ((xa hoi) or (x ho)). hieu hien cac qua gia thanh ((va chu) or (va chi)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((xa hoi) OR (x ho)). hieu hien cac qua gia thanh ((va chu) OR (va chi)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((xa hoi) or (x ho)). hieu hien cac qua gia thanh ((va chu) or (va chi)) tre*.