Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
ban thanh » ban hanh, ban hang
tranh va » tranh van, trang va, trinh va
ban than » van thanh, ban hang, ban hanh

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 hach - hanh tranh va nhung cong ((ban than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - hanh tranh va nhung cong ((ban than) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - hanh tranh va nhung cong ((ban than) or (ban thanh)) cau*.