Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hoc thieu » toc thieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
van dung » van dong, xay dung, tin dung
pham ma » pham van, pham tai, pham xay
pham va » pham van, pham tai, phan van

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) or (hoc thieu)) xanh - canh trinh van dung cong trinh ((pham ma) or (pham va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - canh trinh van dung cong trinh ((pham ma) OR (pham va)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - canh trinh van dung cong trinh ((pham ma) or (pham va))*.