Perhaps you should try some spelling variations:
truong long » trong long, truong cong, truong dong
trung long » trung uong, trong long, trung dong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
ban quan » van quan
toan ban » van ban

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 - hanh ((manh cua) or (ban quan)) ((truong long) OR (trung long)) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((manh cua) OR (ban quan)) ((truong long) OR (trung long)) tinh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((manh cua) or (ban quan)) ((truong long) OR (trung long)) tinh toan ban*".