Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu tinh » lieu tinh, kieu tinh, che tinh
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
trang va » tran van, hang va
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu tinh) OR (chau tinh))) or (trieu tinh)) - hanh trang va dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu tinh) OR (chau tinh))) OR (trieu tinh)) - hanh trang va dung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu tinh) OR (chau tinh))) or (trieu tinh)) - hanh trang va dung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu tinh) OR (chau tinh))) or (trieu tinh)) - hanh trang va dung cong tan toan cao*.