Perhaps you should try some spelling variations:
hoc thieu » hoc hien
phan dan » phan dang, phan dau, nhan dan
dan dung » van dung, tin dung, ap dung
dung ung » dung cong
ung dan » dung dan, tung dan, bung dan
dan van » dang van, doan van, dao van
van tan » van tuan, van ban, van tai
tan ca » tan cua, tang ca, dan ca

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 - phan dan dung ung dan van tan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) tinh - phan dan dung ung dan van tan ca".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) tinh - phan dan dung ung dan van tan ca*.