Perhaps you should try some spelling variations:
phuc khong » thuc khong, thuoc khong, chu khong
cua thuong » cua truong, cua phuong, ca thuong
tieu sach » chieu sach, dien sach, te sach
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan lap » toan lap, quan lap, luan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - canh tranh ((cua thuong) or (phuc khong)) cong van tuan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - canh tranh ((cua thuong) OR (phuc khong)) cong van tuan lap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - canh tranh ((cua thuong) or (phuc khong)) cong van tuan lap*.