Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh thong » anh thong, hang thong, hinh thong
hanh trong » hanh trang, anh trong, hinh trong
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - ((hanh thong) or (hanh trong)) quan dung cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((hanh thong) OR (hanh trong)) quan dung cong san than cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((hanh thong) or (hanh trong)) quan dung cong san than cao*.