Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
tung cong » dung cong, tong cong, trong cong
tro dien » tu dien, co dien, o dien
thu dien » tu dien, thu hien, thu dieu
anh tang » anh bang, anh dang, anh nang
tang duc » dang duc, tang du, lang duc
tac toan » tap toan, tam toan, hach toan
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: ((tro dien) or (thu dien)) anh - anh tang duc ((tung cong) OR (truong cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tro dien) OR (thu dien)) anh - anh tang duc ((tung cong) OR (truong cong)) tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tro dien) or (thu dien)) anh - anh tang duc ((tung cong) OR (truong cong)) tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ((tro dien) or (thu dien)) anh - anh tang duc ((tung cong) OR (truong cong)) tac toan tap*.