Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hieu nganh » vien nganh, hiem ngan, hieu manh
thong cong » trong cong, tong cong, thong thong
ban thanh » ban hanh, ban hang
thanh tap » thanh lap, thanh tai, thanh tay
cong ban » cong bang, cong san, cong tan
han he » hanh he, dan he, han ho

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) or (hieu nganh)) - hanh ((han he) OR (han che)) thong cong ban thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu nganh)) - hanh ((han he) OR (han che)) thong cong ban thanh tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu nganh)) - hanh ((han he) OR (han che)) thong cong ban thanh tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu nganh)) - hanh ((han he) OR (han che)) thong cong ban thanh tap*.