Perhaps you should try some spelling variations:
thong duong » tuong duong, thong huong, thong thuong
thanh tung » thanh cong
thong dung » thong cong, thong thuong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
yang phan » nang phan, yang zhang, quang phan
tung cap » trung cap, cung cap, thong cap
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc thieu)) tinh - thanh tung cap ((thong dung) or (thong duong)) yang phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) tinh - thanh tung cap ((thong dung) OR (thong duong)) yang phan lap.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) tinh - thanh tung cap ((thong dung) or (thong duong)) yang phan lap*.