Perhaps you should try some spelling variations:
hoc thien » hoc hien, hoc thiet, hoc tien
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
dang cong » dung cong
manh cua » doanh cua, ban cua
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) or (hoc thieu)) tinh - canh manh cua ((dang cong) or (cong dong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc thieu)) tinh - canh manh cua ((dang cong) OR (cong dong)) tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) or (hoc thieu)) tinh - canh manh cua ((dang cong) or (cong dong)) tan toan cao*.