Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat mach, thuat tac
nhung cong » dung cong, thong cong, nhung don
thanh quan » thanh xuan, thanh tuan, nhanh quang
hoc thuat » hoc thuyet, hoc thuc, hoc chat
hanh dung » thanh dung, hanh dong, manh dung
hang cong » dang cong, hang nong, bang cong
anh dung » anh dong, anh huong, sach dung
quan ban » quang ban, qua ban, quan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuat tach - ((hanh dung) or (anh dung)) luan ((nhung cong) OR (hang cong)) thanh quan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuat tach - ((hanh dung) OR (anh dung)) luan ((nhung cong) OR (hang cong)) thanh quan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuat tach - ((hanh dung) or (anh dung)) luan ((nhung cong) OR (hang cong)) thanh quan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thuat tach - ((hanh dung) or (anh dung)) luan ((nhung cong) OR (hang cong)) thanh quan ban*.