Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » hoc hien
chung han » chung nhan, chung than, chuong han
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cung hay » cong hay, cung may, cung tham
toan ban » van ban

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) or (toc thieu)) xanh - thanh ((cung hay) OR (chung han)) thong cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - thanh ((cung hay) OR (chung han)) thong cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) xanh - thanh ((cung hay) OR (chung han)) thong cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - thanh ((cung hay) OR (chung han)) thong cong manh toan ban*.