Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
tran tuan » tran xuan, tran quang, tranh luan
dung cong » dung trong
hoc dieu » hoc thieu, hoc hien
cong tac » cong ty
tran cau » tran chau, toan cau, tra cau
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu hanh - thanh ((tran tuan) or (tran thanh)) dung cong tac ((tran cau) or (ran cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - thanh ((tran tuan) OR (tran thanh)) dung cong tac ((tran cau) OR (ran cau)).
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - thanh ((tran tuan) or (tran thanh)) dung cong tac ((tran cau) or (ran cau))*.