Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
van thanh » ban thanh, van tuan
qua dung » quang dung, su dung, qua song
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (hoc thieu)) manh - hanh trinh qua dung cong ((dan toan) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) manh - hanh trinh qua dung cong ((dan toan) OR (van thanh)) cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) manh - hanh trinh qua dung cong ((dan toan) or (van thanh)) cao*.