Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh ((trinh va) or (trinh vat)) thong cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh ((trinh va) OR (trinh vat)) thong cong van toan tap*.