Perhaps you should try some spelling variations:
dinh trong » sinh trong, chinh trong, dinh thuong
hinh trong » chinh trong, sinh trong, binh trong
mot chieu » doi chieu, ho chieu
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
tho tong » tho trong, thuoc tong, pho thong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 (doc hieu)) xanh - ((hinh trong) OR (dinh trong)) tho tong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - ((hinh trong) OR (dinh trong)) tho tong cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doc hieu)) xanh - ((hinh trong) OR (dinh trong)) tho tong cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - ((hinh trong) OR (dinh trong)) tho tong cong tac toan ban*.