Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
tranh hang » trinh han, tran hoang, tran hong
hang trong » hoang trong, thang trong, lang trong
hoc thieu » toc thieu, hoc hien
tran chau » tranh chap, tran huu
cong san » cong tac
tran cau » toan cau, ran cau, tra cau

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 - canh tranh hang trong cong san ((tran cau) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - canh tranh hang trong cong san ((tran cau) OR (tran chau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - canh tranh hang trong cong san ((tran cau) or (tran chau))*.