Perhaps you should try some spelling variations:
trong thuat » trong hoat, trong thu, trong phat
tran thuat » trien thuat, tran tuan, tran thuy
hoc thieu » hoc hien
dung cong » dung trong
tac thanh » bac thanh, cac thanh, tcc thanh
thanh cau » thanh chau, thanh mau, nhanh cau
cong tac » cong ty

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)) sach - thanh ((tran thuat) OR (trong thuat)) dung cong tac thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sach - thanh ((tran thuat) OR (trong thuat)) dung cong tac thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) sach - thanh ((tran thuat) OR (trong thuat)) dung cong tac thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) sach - thanh ((tran thuat) OR (trong thuat)) dung cong tac thanh cau*.