Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thong trung » thong trong, chong trung, truong trung
hoc thieu » toc thieu, hoc hien
mot chieu » doi chieu, ho chieu
trung dai » truong dai, truong dao, trung tam
tuong va » truong va, thuong va, luong va
va thong » va thuong, va phuong, he thong
dai toan » bai toan, dan toan, dai tan
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) or (mot chieu)) xanh - thanh tuong va thong trung dai toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (mot chieu)) xanh - thanh tuong va thong trung dai toan tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (mot chieu)) xanh - thanh tuong va thong trung dai toan tap*.