Perhaps you should try some spelling variations:
nguoi cong » nguoi muong, nguoi thong, nguoi nung
soc nguoi » toc nguoi, con nguoi, hoa nguoi
cong khi » cong thai, khong khi, co khi
nha dung » kha dung, nha cung, nha dong
dung khi » duong khi, dung chi, dung thi
so sach » so sanh, bo sach, co sach
vu soc » vu son, cu soc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu soc nguoi cong khi đong luc ) or ( so sach nha dung khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu soc nguoi cong khi đong luc ) OR ( so sach nha dung khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( vu soc nguoi cong khi đong luc ) or ( so sach nha dung khi đong luc ))*.