Perhaps you should try some spelling variations:
thi minh » chi minh, thi hanh, thi bich
thu minh » chi minh, vu minh
cuu hang » cuu khang, cuu nang, cua hang
hang hoa » hang khoa, thanh hoa, hang va
hoa than » khoa than, hoa thanh, hoa thuan
than hoa » thanh hoa, than thoa, phan hoa
phan dan » phan dang, phan dau, nhan dan
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va phan » van phan, va phat, va phap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi minh) OR (thu minh)) hoc tap, nghien cuu hang hoa than hoa hoc mai hoi va phan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi minh) OR (thu minh)) hoc tap, nghien cuu hang hoa than hoa hoc mai hoi va phan dan*".