Perhaps you should try some spelling variations:
dong thuong » cong thuong, dong thong, dung thuong
thuong minh » thong minh, truong minh, thuong binh
phuong tin » phuong tien, thuong tin, phuong trinh
trai dong » thai dong, tai dong, trai dung
doc sach » hoc sach, toc sach, nuoc sach
sach che » sach thue, sach nha, sach cap
sach ha » sach nha, sach han, sach xa
me giai » de giai, ve giai, ke giai
te sach » toc sach
me trai » me tri, ve trai
che me » che my
ha me » cha me, ba me, ha le
doan » doanh, dan, toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( doc sach ha me giai doan phuong tin ) or ( te sach che me trai dong thuong minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( doc sach ha me giai doan phuong tin ) OR ( te sach che me trai dong thuong minh )).
• Adding a wildcard symbol may retrieve word variants: (( doc sach ha me giai doan phuong tin ) or ( te sach che me trai dong thuong minh ))*.