Perhaps you should try some spelling variations:
trong long » trong luong, truong long, trong cong
kien sach » dien sach, vien bach, kien mac
hanh dang » hanh dong, anh dang, hanh dung
cac trong » cac truong, cay trong, tac trong
thanh lap » thanh san, phan lap, thanh hai
hoc kien » hoc hien, hoc vien, hoa kien
dang cac » dung cac, bang cac, dong cac
long sat » cong suat, long span, luong san
nhan lap » phan lap, nhan loai, nhan luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kien sach - hanh dang cac trong long sat ((nhan lap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kien sach - hanh dang cac trong long sat ((nhan lap) OR (thanh lap))*.