Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat
san van » tan van, luan van, tran van
san va » ban va, dan va, han 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 xanh - hanh ((san va) OR (san van)) thong cong ((dan phan) or (dan chan)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((san va) OR (san van)) thong cong ((dan phan) OR (dan chan)) lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((san va) OR (san van)) thong cong ((dan phan) or (dan chan)) lap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((san va) OR (san van)) thong cong ((dan phan) or (dan chan)) lap*.