Perhaps you should try some spelling variations:
nhung thoi » nhung thi, phung thi, nhung loi
quen vang » que van, que lang, quen hanh
thuoc mot » huoc mot, thuoc moi, hoc mot
quan van » quan va, quan luan, quan doan
noi dung » hoc dung
thuoc ma » hoc ma, duoc ma
luan » lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: nhung thoi ((quen vang) or (((quan van) or (luan van)))). noi dung ((thuoc mot) OR (thuoc ma))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhung thoi ((quen vang) OR (((quan van) OR (luan van)))). noi dung ((thuoc mot) OR (thuoc ma)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhung thoi ((quen vang) or (((quan van) or (luan van)))). noi dung ((thuoc mot) OR (thuoc ma))".
• Adding a wildcard symbol may retrieve word variants: nhung thoi ((quen vang) or (((quan van) or (luan van)))). noi dung ((thuoc mot) OR (thuoc ma))*.