Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, trinh quan
chieu xanh » chieu sach, chieu sang, chieu tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
hanh vac » hanh cac, hanh van, thanh van
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - hanh ((tinh quang) or (tranh quang)) dung cong san ((hanh vac) or (hanh va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((tinh quang) OR (tranh quang)) dung cong san ((hanh vac) OR (hanh va)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((tinh quang) or (tranh quang)) dung cong san ((hanh vac) or (hanh va))*.