Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cong sang » cong lang, cong vang, cong bang
cong san » cong tac
than man » than ma, thanh san, tran manh
luat » luan, xuat

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 luat thuong ((cong san) or (cong sang)) than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - hanh trinh luat thuong ((cong san) OR (cong sang)) than man.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - hanh trinh luat thuong ((cong san) or (cong sang)) than man*.