Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
bang cong » dang cong, bang song, hang cong
van thanh » ban thanh, van tuan
cua bang » chua bang, cua ban, cua dang
dan than » dan chan, ban than, van than

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 tinh - hanh trinh cua bang cong ((dan than) or (van thanh)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh trinh cua bang cong ((dan than) OR (van thanh)) man.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh trinh cua bang cong ((dan than) or (van thanh)) man*.