Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
tranh cua » doanh cua, manh cua
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 - hanh ((trung cua) or (tranh cua)) nhung ((cong thanh) OR (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trung cua) OR (tranh cua)) nhung ((cong thanh) OR (dong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((trung cua) or (tranh cua)) nhung ((cong thanh) OR (dong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trung cua) or (tranh cua)) nhung ((cong thanh) OR (dong thanh)) toan cao*.