Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chat » tinh chat, trinh luat, trinh han
trong dong » trong cong, trong nong, trong dang
tuong dong » tuong duong, cuong duong, phuong dong
hieu sang » chieu sang, hieu lang, hieu quang
tap doanh » tap doan, lap doanh, tap danh
doc hieu » toc thieu, hoc thieu, hoc hien
doanh va » doan va, doanh tai, doanh cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - hanh trinh chat ((trong dong) or (tuong dong)) tap doanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - hanh trinh chat ((trong dong) OR (tuong dong)) tap doanh va.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - hanh trinh chat ((trong dong) or (tuong dong)) tap doanh va*.