Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
thong van » trong van, thong va, thong quan
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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 ((mang cua) OR (dung cua)) khong thong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chuc nang) OR (chieu sang)) - hanh ((mang cua) OR (dung cua)) khong thong van tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chuc nang) or (chieu sang)) - hanh ((mang cua) OR (dung cua)) khong thong van tuan ban".
• Adding a wildcard symbol may retrieve word variants: chao ((chuc nang) or (chieu sang)) - hanh ((mang cua) OR (dung cua)) khong thong van tuan ban*.