Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
van thanh » ban thanh
van tuan » van quan, van ban, anh tuan

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 tach - hanh trinh suat thong cong ((van thanh) or (van tuan)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - hanh trinh suat thong cong ((van thanh) OR (van tuan)) man*.