Perhaps you should try some spelling variations:
trong manh » trong minh, trong mach, trong canh
hieu sang » chieu sang, hieu lang, hieu quang
quang qua » quang cua, quang tuan, quang xuan
trong anh » truong anh, trong nganh, trong doanh
doc hieu » toc thieu, hoc thieu, hoc hien
qua dung » quang dung, su dung, qua song
toan ban » van ban

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 - tinh quang qua dung ((trong manh) or (trong anh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - tinh quang qua dung ((trong manh) OR (trong anh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - tinh quang qua dung ((trong manh) or (trong anh)) toan ban*.