Perhaps you should try some spelling variations:
truong chung » truong trung
trinh chao » trinh chat, trinh co, trinh giao
hieu sang » chieu sang, hieu lang, hieu quang
trinh han » trinh quan
chung lap » chung luan, chung ta, chung nam
lap doanh » luat doanh, nhap doanh, tap doan
doanh bat » danh bat, doanh tai, doanh va
doc hieu » toc thieu, hoc thieu, hoc hien

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 chao) or (trinh han)) truong chung lap doanh bat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - hanh ((trinh chao) OR (trinh han)) truong chung lap doanh bat.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - hanh ((trinh chao) or (trinh han)) truong chung lap doanh bat*.