Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hang cong » dang cong, hang nong, bang cong
van thang » van thanh, van khang, van hang
doc hieu » toc thieu, hoc thieu, hoc hien
dinh cua » dinh cuu, sinh cua, dinh cu
tinh cua » trinh cua, sinh cua, tinh chat
van than » van thanh, van tuan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hoang ((dinh cua) or (tinh cua)) hang cong ((van than) OR (van thang)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hoang ((dinh cua) OR (tinh cua)) hang cong ((van than) OR (van thang)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hoang ((dinh cua) or (tinh cua)) hang cong ((van than) OR (van thang)) tap".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hoang ((dinh cua) or (tinh cua)) hang cong ((van than) OR (van thang)) tap*.