Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hanh trung » thanh trung, hanh trang, manh trung
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
toan tap » toan 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 manh - ((hanh trung) or (thanh tung)) cua thong ((cong tap) OR (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - ((hanh trung) OR (thanh tung)) cua thong ((cong tap) OR (cong tac)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - ((hanh trung) or (thanh tung)) cua thong ((cong tap) OR (cong tac)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - ((hanh trung) or (thanh tung)) cua thong ((cong tap) OR (cong tac)) toan tap*.