Perhaps you should try some spelling variations:
thuat dieu » thuat dien
hanh trinh » canh tranh
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cap » khan cap, than cap, cao cap
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat dieu hanh - ((hanh trinh) or (hanh chinh)) va hang cong dan chan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat dieu hanh - ((hanh trinh) OR (hanh chinh)) va hang cong dan chan cap.
• Adding a wildcard symbol may retrieve word variants: thuat dieu hanh - ((hanh trinh) or (hanh chinh)) va hang cong dan chan cap*.