Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » thong cong, hang cong, nhung don
kieu tinh » lieu tinh, trieu tinh, diep tinh
chau tinh » cuu tinh, ha tinh, cua tinh
trung hay » trung ha, trung hai, trung gay
dung cong » dung trong
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 ((kieu tinh) or (chau tinh)) - thanh trung hay ((nhung cong) OR (dung cong)) tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((kieu tinh) OR (chau tinh)) - thanh trung hay ((nhung cong) OR (dung cong)) tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((kieu tinh) or (chau tinh)) - thanh trung hay ((nhung cong) OR (dung cong)) tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((kieu tinh) or (chau tinh)) - thanh trung hay ((nhung cong) OR (dung cong)) tac toan cao*.