Perhaps you should try some spelling variations:
lang muong » lang tuong, long muong, nang luong
muong tinh » duong tinh, muong thanh, khuong tinh
hoc thieu » hoc hien
manh cong » manh cuong, hanh cong, manh long
cong thuc » cong tac
thuc lang » thuc trang, thuc hanh, thuc dan
toan tap » toan 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)) sang - manh cong thuc lang muong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - manh cong thuc lang muong tinh toan tap*.