Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
canh trinh » canh tranh, hanh trinh, canh tinh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 - canh trinh va thong cong dan ((phan cau) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - canh trinh va thong cong dan ((phan cau) OR (phan cac))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - canh trinh va thong cong dan ((phan cau) OR (phan cac))*.