Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh ((than cua) or (thai cua)) ((nhung cong) OR (thong cong)) tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((than cua) OR (thai cua)) ((nhung cong) OR (thong cong)) tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((than cua) or (thai cua)) ((nhung cong) OR (thong cong)) tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((than cua) or (thai cua)) ((nhung cong) OR (thong cong)) tac toan cao*.