Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
chua xang » chua nang, chuc nang, chu bang
chu nang » chuc nang, chua nang, cuu nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh trinh ((chua xang) OR (chu nang)) cong dan toan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh trinh ((chua xang) or (chu nang)) cong dan toan tap*.