Perhaps you should try some spelling variations:
lang tuong » lang trong, bang tuong, lang muong
tuong tinh » truong tinh, thuong tinh, trong 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
tinh van » trinh van, dinh van, tinh va

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 tuong tinh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - manh cong thuc lang tuong tinh van ban*.