Perhaps you should try some spelling variations:
thanh trong » thanh trung, hanh trong, nhanh trong
tranh trong » tran trong, trinh trong, anh trong
chieu sach » chinh sach, chiet tach, chieu sang
dien sach » dien anh
dung cong » dung trong
van dung » van dong, xay dung, tin dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » 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: hoc ((chieu sach) or (dien sach)) - ((thanh trong) OR (tranh trong)) van dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (dien sach)) - ((thanh trong) OR (tranh trong)) van dung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (dien sach)) - ((thanh trong) OR (tranh trong)) van dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (dien sach)) - ((thanh trong) OR (tranh trong)) van dung cong tan toan cau*.