Perhaps you should try some spelling variations:
thieu hanh » thien thanh, thien chanh, thieu khang
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
quang tran » quang tuan, quang trung, quang thanh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tran huu » tran duc

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu hanh - hanh trinh chua ((dang cong) or (dung cong)) quang tran huu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hanh - hanh trinh chua ((dang cong) OR (dung cong)) quang tran huu*.