Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thuong manh » thuong mach, thuong nganh, thuong mai
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
va phuong » va thuong, cac phuong
va thong » va thuong, he thong, va cong
manh van » anh van, menh van, canh van

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 quang - hanh trinh ((va thong) or (va phuong)) thuong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - hanh trinh ((va thong) OR (va phuong)) thuong manh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - hanh trinh ((va thong) or (va phuong)) thuong manh van ban*.