Perhaps you should try some spelling variations:
quang khanh » quang thanh, quan thanh, quang khai
muong thanh » truong thanh, dong thanh, cong thanh
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
quan hanh » quan thanh, quang thanh, quan hoang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap

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 chinh ((quan hanh) or (((muong thanh) or (quang khanh)))) cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh chinh ((quan hanh) OR (((muong thanh) OR (quang khanh)))) cong tan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh chinh ((quan hanh) or (((muong thanh) or (quang khanh)))) cong tan than tap*.