Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh ve » trinh he, trinh va, trinh vi
ve thong » he thong, va thong, ve phong
cong san » cong tac

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 ve thong cong san ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh ve thong cong san ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ve thong cong san ((toan ban) OR (van ban))*.