Perhaps you should try some spelling variations:
trung thanh » truong thanh
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 cap » truong cao, trung tam
chan tu » phan tu, han tu, chon tu

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 cap) or (trung thanh)) nhung ((cong thanh) OR (dong thanh)) chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cap) OR (trung thanh)) nhung ((cong thanh) OR (dong thanh)) chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung cap) or (trung thanh)) nhung ((cong thanh) OR (dong thanh)) chan tu".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cap) or (trung thanh)) nhung ((cong thanh) OR (dong thanh)) chan tu*.