Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
quang tran » quang tuan, quang trung, quang thanh
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
tran chau » tranh chap, tran huu
hoc dieu » 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: hoc dieu hanh - hanh trinh chua ((cong cong) or (dung cong)) quang tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - hanh trinh chua ((cong cong) OR (dung cong)) quang tran chau*.