Perhaps you should try some spelling variations:
phuong duong » phuong dung, chuong duong, phuong dong
van phuong » van phong, va phuong, van chuong
duong dang » dung dang, duong dan, duong dung
hoc thieu » hoc hien
dang phan » dung phan, nang phan, dang phat
sinh van » sinh vat, dinh van, sinh va

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 (toc thieu)) tinh - nhan sinh van phuong duong dang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - nhan sinh van phuong duong dang phan tu.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - nhan sinh van phuong duong dang phan tu*.