Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
cua khong » hua khong, cua phuong, cua thuong
thong van » trong van, thong va, thong quan
hanh ban » thanh ban, hang ban, hanh san
van quan » van ban
quan ban » quang ban, qua ban, quan van
ban cua » ban quan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chuc nang) or (chieu sang)) - hanh ban cua khong thong van quan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chuc nang) OR (chieu sang)) - hanh ban cua khong thong van quan ban*.