Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
thieu xanh » chieu xanh, hieu manh, thien anh
phuong dan » phuong danh, huong dan, phuong lan
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
toan cao » toan ban, toan tap

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 - thanh ((trung va) or (truong va)) dung ((phuong dan) OR (phuong doan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung va) OR (truong va)) dung ((phuong dan) OR (phuong doan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung va) or (truong va)) dung ((phuong dan) OR (phuong doan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung va) or (truong va)) dung ((phuong dan) OR (phuong doan)) toan cao*.