Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
tuong cua » truong cua, huong cua, thong cua
dung cong » dung trong
tung cua » trung cua, dung cua, tang cua
cong tac » cong ty
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: ((mot chieu) or (hoc thieu)) xanh - thanh ((tung cua) OR (tuong cua)) dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) xanh - thanh ((tung cua) OR (tuong cua)) dung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) xanh - thanh ((tung cua) OR (tuong cua)) dung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) xanh - thanh ((tung cua) OR (tuong cua)) dung cong tac toan cao*.