Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, thien anh, thien danh
song trong » cong trong, dong trong, sang trong
trong vach » trong mach, trong cach, trong hach
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung qua » trung quan, trong qua, trung cua
vach tran » sach tranh, hach toan, sach tren
tran cau » tran chau, toan cau, ran cau

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 (hieu manh)) - thanh trung qua song trong vach tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh trung qua song trong vach tran cau*.