Perhaps you should try some spelling variations:
trinh chuan » trinh quan, trinh luan, trinh phan
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
bang song » nang song
van phan » van phong, van thanh, luan phan
dan chan » dan gian, dan ca, van chat

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 sang - hanh ((trinh chuan) or (trinh han)) bang song ((van phan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trinh chuan) OR (trinh han)) bang song ((van phan) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trinh chuan) or (trinh han)) bang song ((van phan) or (dan chan)) cau*.