Perhaps you should try some spelling variations:
thong duong » tuong duong, thong dung, thong huong
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh han » trinh quan
duong van » duong va, luong va, dang van
doi lieu » duoc lieu, doi chieu, du lieu
van tuan » van quan, van ban, anh tuan
tuan tap » toan tap, tuan tai, tuyen tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - hanh ((trinh han) OR (tinh chat)) thong duong van tuan tap~.
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - hanh ((trinh han) or (tinh chat)) thong duong van tuan tap*.