Perhaps you should try some spelling variations:
nhung thoi » nhung thi, phung thi, nhung loi
quyen van » quyet van, huyen van, nguyen van
viet tuan » viet thuan, viet quan, viet tran
trong ban » trong san, trong quan, trong cac
trong tan » trong quan, trong cac, trong ca
quen van » quan van, que van, huyen van

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 van) OR (quyen van)). viet tuan ((trong ban) or (trong tan)) than~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhung thoi ((quen van) OR (quyen van)). viet tuan ((trong ban) OR (trong tan)) than.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhung thoi ((quen van) OR (quyen van)). viet tuan ((trong ban) or (trong tan)) than".
• Adding a wildcard symbol may retrieve word variants: nhung thoi ((quen van) OR (quyen van)). viet tuan ((trong ban) or (trong tan)) than*.