Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
hien bach » vien bach, thien hach, hien hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
cua trung » cua truong, xuan trung, cua nhung
thanh lap » thanh san, phan lap, thanh hai
mang cua » manh cua, dung cua, ban cua
cong sat » cong suat, cong san, cong hat
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 hien bach - hanh mang cua trung cong sat ((nhan lap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien bach - hanh mang cua trung cong sat ((nhan lap) OR (thanh lap))*.