Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhanh mang » nhanh lang, hanh mang, nhanh quang
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
san van » tan van, luan van, tran van

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 (hoc thieu)) tinh - ((hanh tang) or (nhanh mang)) cua dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) tinh - ((hanh tang) OR (nhanh mang)) cua dung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) tinh - ((hanh tang) or (nhanh mang)) cua dung cong san van ban*.