Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh phan » thanh pho, thanh san, thanh toan
hanh dung » thanh dung, anh dung, hanh dong
luan tinh » quan tinh, luan kinh, luan sinh
tinh cong » trinh cong, tinh cuong, minh cong
phan chat » phan phat, phap chat, nhan chat
doc hieu » hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sach - hanh dung luan tinh cong thanh phan chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - hanh dung luan tinh cong thanh phan chat*.