Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu
cuong tap » luong tap, cong tac, luong tai
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) manh - hanh trinh ((cua dong) OR (cua dang)) cuong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) manh - hanh trinh ((cua dong) OR (cua dang)) cuong tap toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) manh - hanh trinh ((cua dong) OR (cua dang)) cuong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) manh - hanh trinh ((cua dong) OR (cua dang)) cuong tap toan ban*.