Perhaps you should try some spelling variations:
lanh tranh » lan tranh, hanh trinh, sach tranh
thieu xanh » chieu xanh, thien anh, thien danh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong san » cong tac
san phan » san pham, van phan, sat phan
phan lap » phan 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) or (hieu manh)) - ((lanh tranh) OR (canh tranh)) va nhung cong san phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - ((lanh tranh) OR (canh tranh)) va nhung cong san phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu manh)) - ((lanh tranh) OR (canh tranh)) va nhung cong san phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - ((lanh tranh) OR (canh tranh)) va nhung cong san phan lap*.