Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
ho chieu » theo chieu, hoc thieu, doi chieu
dang vat » dang van, dong vat, dang nhat
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap
dang va » dang van, hang va, dung va
bang va » hang va, ban va, trang va

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 ((((dang va) or (dang vat))) or (bang va)) trong cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((((dang va) OR (dang vat))) OR (bang va)) trong cong tan than tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((((dang va) or (dang vat))) or (bang va)) trong cong tan than tap*.