Perhaps you should try some spelling variations:
danh doi » danh di, thanh doi, dung doi
hieu ve » hieu va, hieu van
doi cua » dai cua, hoi cua, dong cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky
ve cam » ve cham, ve cac, va cam
luc va » tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) or (sai ky)) nang x hoi. hieu ve cam ((luc va) OR (duc va)) danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sai ky)) nang x hoi. hieu ve cam ((luc va) OR (duc va)) danh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) or (sai ky)) nang x hoi. hieu ve cam ((luc va) OR (duc va)) danh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (sai ky)) nang x hoi. hieu ve cam ((luc va) OR (duc va)) danh doi cua tre*.