Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
cong khuong » cong thuong, cong huong, cong khong
giai cong » gia cong, giao cong, giai phong
con thong » cong thong, con hong, cong thuong
giai con » gian con, giai doan, giao cong
hoach va » hoach xay, hanh va, doanh va
te sach » toc sach
sach ha » sach nha, sach han, sach xa
le giai » de giai, ly giai, ve giai
va le » va de, vu le

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 ha le giai con thong tin ) or ( thu hoach va le giai cong khuong tinh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach ha le giai con thong tin ) OR ( thu hoach va le giai cong khuong tinh )).
• Adding a wildcard symbol may retrieve word variants: (( te sach ha le giai con thong tin ) or ( thu hoach va le giai cong khuong tinh ))*.