Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trong quan » thong quan, tong quan, thong quang
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
quan han » quan hanh, quanh han, quan ha
han tap » han tai, toan tap, nhan tai

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 - hanh ((trinh vat) or (trinh va)) dung trong quan han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trinh vat) OR (trinh va)) dung trong quan han tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trinh vat) or (trinh va)) dung trong quan han tap*.