Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
dung muong » dung luong, dung huong, dung muon
muong bai » cuong bai, muong bi, muong bang
anh tang » anh bang, anh dang, anh nang
tang xay » dang xay, thong xay, trong xay
bai toan » bai tap
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu trinh - anh tang xay dung muong bai toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - anh tang xay dung muong bai toan cau*.