Perhaps you should try some spelling variations:
thong danh » thong dan, thong lanh, thong thanh
thieu sang » chieu sang, thieu khang, thieu quang
trong danh » trong doanh, truong danh, trong anh
hoc thieu » toc thieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
tranh va » tranh van, trang va, trinh va
toan tap » toan 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 sang - canh ((tranh va) or (trinh van)) thong ((thong danh) or (trong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - canh ((tranh va) OR (trinh van)) thong ((thong danh) OR (trong danh)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - canh ((tranh va) or (trinh van)) thong ((thong danh) or (trong danh)) toan tap*.