Perhaps you should try some spelling variations:
trinh nhung » trinh phuong, trinh dung
hanh trinh » canh tranh, hanh chinh
nhung dung » phuong dung, ung dung, thong dung
dung cong » dung trong
doc hieu » hoc thieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doc hieu) OR (hoc hien))) or (toc thieu)) tinh - hanh trinh nhung dung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doc hieu) OR (hoc hien))) OR (toc thieu)) tinh - hanh trinh nhung dung cong dan than tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doc hieu) OR (hoc hien))) or (toc thieu)) tinh - hanh trinh nhung dung cong dan than tap*".