Perhaps you should try some spelling variations:
khoi thuat » ki thuat, hoc thuat
thuat sach » thuat lanh, thuat san
cong ngang » cong nhan, cong quang, cong lang
cua nhung » va nhung
thanh cha » thanh ha, thanh nha, thanh phan
mang cua » manh cua, dung cua, ban cua
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: khoi thuat sach - cach mang cua nhung ((cong san) or (cong ngang)) thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: khoi thuat sach - cach mang cua nhung ((cong san) OR (cong ngang)) thanh cha.
• Adding a wildcard symbol may retrieve word variants: khoi thuat sach - cach mang cua nhung ((cong san) or (cong ngang)) thanh cha*.