Perhaps you should try some spelling variations:
chung than » chung nhan, chung han, cung than
phuong thi » phung thi, huong thi, phong thi
chung thi » phung thi, chung chi, nhung thoi
nhung thi » nhung thoi, phung thi, nhung tri
que van » qua van, quy van, quyet van
quen tu » quen thu, huyen tu, quen cua
tu lap » truc lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((chung thi) OR (chung than))) or (phuong thi))) or (nhung thi)) que van. thoi quen tu lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((chung thi) OR (chung than))) OR (phuong thi))) OR (nhung thi)) que van. thoi quen tu lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((chung thi) OR (chung than))) or (phuong thi))) or (nhung thi)) que van. thoi quen tu lap".
• Adding a wildcard symbol may retrieve word variants: ((((((chung thi) OR (chung than))) or (phuong thi))) or (nhung thi)) que van. thoi quen tu lap*.