Perhaps you should try some spelling variations:
thien luan » thien quan, thien van, hien luat
luan phan » luan van, luan hoan
hanh tai » thanh tai, hang tai, han tai
hanh dai » hanh dao, vanh dai, thanh dat
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
bai ky » ban ky, bac ky, dai ky
tu ban » thu ban, te ban
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((bai ky) or (sai ky)) lang xa hoi. thien luan phan tu ban ((hanh dai) OR (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((bai ky) OR (sai ky)) lang xa hoi. thien luan phan tu ban ((hanh dai) OR (hanh tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((bai ky) or (sai ky)) lang xa hoi. thien luan phan tu ban ((hanh dai) OR (hanh tai)) cua tre*".