Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
phung cong » nhung cong, phong cong, nhung chong
trinh vat » trinh van, trinh luat, trinh han
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
pham cau » phan cau, pham ca, pham can
pham lan » pham luan, pham van, phan lan

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) or (sinh vat)) phung cong san ((pham cau) or (pham lan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh ((trinh vat) OR (sinh vat)) phung cong san ((pham cau) OR (pham lan)).
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh ((trinh vat) or (sinh vat)) phung cong san ((pham cau) or (pham lan))*.