Perhaps you should try some spelling variations:
hoc chieu » hoc thieu, ho chieu, hoc hien
dung dung » ung dung, dung ung, dung dong
dung dat » dung va, dung tai
dat phan » data phan, dam phan, sat phan
van dan » van ban, ban dan, van dao
da dung » dan dung, dat dung, da dang
dan da » dan dat, dan ca, dan 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 chieu) or (toc thieu)) sang - van dan da dung dung dat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) sang - van dan da dung dung dat phan tu*.