Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh phang » khanh phong, nhanh thang, thanh thang
hoc thieu » toc thieu, hoc hien
hanh phan » thanh phan, anh phan, hanh han
thong van » trong van, thong va, thong quan
va thong » va thuong, va phuong, he thong
toan cao » toan tap
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: hoc thieu sang - ((hanh phang) or (hanh phan)) va thong thong van ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh phang) OR (hanh phan)) va thong thong van ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh phang) or (hanh phan)) va thong thong van ((toan cao) or (toan ban))*.