Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
phuong dong » phuong dung, phuong hoang, chuong duong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hai quan » tac quan
quan lap » quan luan, quang lam, quan lang
dang ca » dang cac, hang ca, dang ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - nhan ((dang ca) or (dan ca)) ((thuong cong) or (phuong dong)) hai quan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - nhan ((dang ca) OR (dan ca)) ((thuong cong) OR (phuong dong)) hai quan lap.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - nhan ((dang ca) or (dan ca)) ((thuong cong) or (phuong dong)) hai quan lap*.