Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhanh lang » nhanh quang, nhanh thang, nhan dang
dung cong » dung trong
lang qua » lang que, lang cua, long qua
qua dung » quang dung, su dung, qua song
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: ((theo chieu) or (toc thieu)) tinh - nhanh lang qua dung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (toc thieu)) tinh - nhanh lang qua dung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (toc thieu)) tinh - nhanh lang qua dung cong tac toan tap*.