Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
thong thanh » phong thanh, thong than, truong thanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
cua nong » cua cong, cuu nong, cua dong
pham cau » phan cau, pham ca, pham can
can ban » van ban, toan ban
ban cua » ban quan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - can ban cua nong ((thong thanh) or (trong thanh)) pham cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - can ban cua nong ((thong thanh) OR (trong thanh)) pham cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - can ban cua nong ((thong thanh) or (trong thanh)) pham cau*.