Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
tranh chua » tranh cua, trinh chuan, tranh chap
phung cong » nhung cong, phong cong, nhung chong
hoc thieu » toc thieu, hoc hien
hung cong » nhung cong, hung cuong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - canh tranh chua ((hung cong) or (phung cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh tranh chua ((hung cong) OR (phung cong)) manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh tranh chua ((hung cong) or (phung cong)) manh toan ban*.