Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
nang cong » nang song, dang cong, bang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
hoc hieu » hoc hien, doc hieu, hoc dieu
trinh va » trinh van, trinh vat, trinh ve
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 hieu) OR (hoc thieu)) manh - hanh ((trinh va) or (trinh luat)) nang cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) manh - hanh ((trinh va) OR (trinh luat)) nang cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) manh - hanh ((trinh va) or (trinh luat)) nang cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) manh - hanh ((trinh va) or (trinh luat)) nang cong manh toan ban*.