Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, nhung don
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
phan dau » phan tu, hang dau

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 - canh trinh vat ((nhung cong) or (hang cong)) dan ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh trinh vat ((nhung cong) OR (hang cong)) dan ((phan lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh trinh vat ((nhung cong) or (hang cong)) dan ((phan lap) or (phan dau))*.