Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thuyet » hoc chuyen
chung cong » nhung cong, chong cong, phung cong
hoc thiet » hoc thieu, hoc hien, toc thieu
trung cua » truong cua, trung tuan, trung cap
cua chung » cua nhung, luan chung, luat chung
thanh lap » thanh san, phan lap, thanh hai
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc thuyet)) tach - thanh trung cua chung cong san ((phan cac) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc thuyet)) tach - thanh trung cua chung cong san ((phan cac) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc thuyet)) tach - thanh trung cua chung cong san ((phan cac) or (thanh lap))*.