Perhaps you should try some spelling variations:
trong manh » trong minh, trong anh, trong mach
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
manh toan » thanh toan, anh tuan, tinh toan
mang qua » mang cua, nang quan, tang quan
mang vua » mang cua, mang va, hang va
toan ban » van 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 chieu) or (hoc thieu)) sach - hanh ((mang qua) OR (mang vua)) dung trong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) sach - hanh ((mang qua) OR (mang vua)) dung trong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc thieu)) sach - hanh ((mang qua) OR (mang vua)) dung trong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) sach - hanh ((mang qua) OR (mang vua)) dung trong manh toan ban*.