Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
dan phan » doan phan, dan chan, van phan
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: hoc thieu xanh - canh ((trinh vat) or (trinh van)) ((nhung cong) OR (hang cong)) dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((trinh vat) OR (trinh van)) ((nhung cong) OR (hang cong)) dan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((trinh vat) or (trinh van)) ((nhung cong) OR (hang cong)) dan phan dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((trinh vat) or (trinh van)) ((nhung cong) OR (hang cong)) dan phan dau*.