Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thuc xanh » thuc hanh, thuc thanh, thuc dan
van thanh » ban thanh, van tuan
hoc thuc » hoc huu
hang tai » hang va, dung tai
dan toan » van toan, dan than, manh toan
hang ca » hang va, nang cao, hang 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 thuc xanh - hanh ((hang ca) or (hang tai)) thong cong ((dan toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuc xanh - hanh ((hang ca) OR (hang tai)) thong cong ((dan toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thuc xanh - hanh ((hang ca) or (hang tai)) thong cong ((dan toan) or (van thanh)) cau*.