Perhaps you should try some spelling variations:
nhat thuong » nhat huong, phan thuong, luat thuong
thuong cong » thong cong, thuong con, thuong dong
manh trung » manh tung, thanh trung, manh hung
trung nhat » truong nhat, trong nhat, trung nhan
thieu cac » thien cac, hieu ca, chieu cao
hieu cac » hieu luc, hieu va, hieu van
van toan » van tuan, van tan, van thanh
van than » van thanh, van thang, van tuan

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 cac) OR (hieu cac)) - manh trung nhat thuong cong ((van toan) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu cac) OR (hieu cac)) - manh trung nhat thuong cong ((van toan) OR (van than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu cac) OR (hieu cac)) - manh trung nhat thuong cong ((van toan) or (van than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu cac) OR (hieu cac)) - manh trung nhat thuong cong ((van toan) or (van than)) cau*.