Perhaps you should try some spelling variations:
khong cuong » khong xuong, hong cuong, thong chuong
hanh trung » thanh trung, hanh trang, manh trung
mot chieu » doi chieu, ho chieu
hoc thieu » hoc hien
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
cuong tap » luong tap, cong tac, luong tai
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) OR (((hoc thieu) OR (toc thieu)))) tinh - hanh trung cua khong cuong tap toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) OR (((hoc thieu) OR (toc thieu)))) tinh - hanh trung cua khong cuong tap toan ban*.