Perhaps you should try some spelling variations:
trong thuat » trong hoat, trong thu, trong phat
manh trong » manh truong, anh trong, manh trung
thuat nang » thuat bang, thuat mang, thuat trang
cong luong » cong thuong, nang luong, cong dong
nang cong » nang song, dang cong, bang cong
luong van » luong va, duong van, luong vat
ho chieu » theo chieu, hoc thieu, mot chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) sach - manh trong thuat nang cong luong van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - manh trong thuat nang cong luong van ban*.