Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
ban hangh » ban thanh, van hanh, van hang
trang va » tran van, hang va
ban hang » ngan hang
va dung » van dung, va duong, vat dung

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