Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu xanh » chieu xanh, hieu manh, thien anh
cua truong » cua trung, xuan truong, cac truong
cang thong » cang thang, cong thong, mang thong
hanh hinh » hanh chinh, hanh tinh, hanh dinh
cua trong » cua trung, qua trong, ca trong
cong cang » cong cong, cong lang, cong vang
thong cau » thong cac, thong cap, thong 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) or (thien thanh)) - hanh hinh ((cua trong) OR (cua truong)) cong cang thong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien thanh)) - hanh hinh ((cua trong) OR (cua truong)) cong cang thong cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien thanh)) - hanh hinh ((cua trong) OR (cua truong)) cong cang thong cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - hanh hinh ((cua trong) OR (cua truong)) cong cang thong cau*.