Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hien xanh » hien hanh, hien nhanh, chieu xanh
va phuong » va thuong, cac phuong
cong vang » cong lang, cong quang, cong ngang
thanh lap » thanh san, thanh hai, thanh van
va thong » va thuong, he thong, va cong
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - thanh toan ((va thong) or (va phuong)) cong vang ((thanh lap) OR (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh toan ((va thong) OR (va phuong)) cong vang ((thanh lap) OR (phan lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh toan ((va thong) or (va phuong)) cong vang ((thanh lap) OR (phan lap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh toan ((va thong) or (va phuong)) cong vang ((thanh lap) OR (phan lap))*.