Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thiet tach » chiet tach, thien hach, thuat tach
hoc thiet » hoc thieu, hoc thuyet, hoc hien
va phuong » va thuong, cac phuong
quan luat » quan luan, quan cua, quy luat
va thong » va thuong, he thong, va cong
luat tap » luat tam, xuat tap, luat hap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - thanh thang ((va thong) or (va phuong)) thong quan luat tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh thang ((va thong) OR (va phuong)) thong quan luat tap.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh thang ((va thong) or (va phuong)) thong quan luat tap*.