Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
trong hach » trong mach, trong hanh, trong thanh
trong cach » trong cac, trong mach, trong canh
hoc thieu » toc thieu, hoc hien
ngan dung » ngan hang, van dung, dan dung
toan cau » toan cao, toan tap, toan tai
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 quang - hanh chinh ngan dung ((trong hach) or (trong cach)) ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - hanh chinh ngan dung ((trong hach) OR (trong cach)) ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - hanh chinh ngan dung ((trong hach) or (trong cach)) ((toan cau) or (toan ban))*.