Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thiet, hoc tien
hoc thieu » toc thieu, hoc hien
chinh tai » chinh tri
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
chinh va » chinh ta, hanh va, tinh va
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)) hach - hanh ((chinh va) or (chinh tai)) nhung cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc thieu)) hach - hanh ((chinh va) OR (chinh tai)) nhung cong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) OR (hoc thieu)) hach - hanh ((chinh va) or (chinh tai)) nhung cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) OR (hoc thieu)) hach - hanh ((chinh va) or (chinh tai)) nhung cong manh toan cao*.