Perhaps you should try some spelling variations:
hoc thiet » hoc thuyet, hoc hien, toc thieu
hoc thieu » toc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cuu nong » cuu cong, cuu nang, cuu tong
cong san » cong tac
san hang » san chang, ban hang, van hang
hang tap » hang tai, han tap, hang tmcp

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc thieu)) danh - canh tranh ((cua tong) or (cuu nong)) cong san hang tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc thieu)) danh - canh tranh ((cua tong) OR (cuu nong)) cong san hang tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc thieu)) danh - canh tranh ((cua tong) or (cuu nong)) cong san hang tap*.