Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
thanh ve » hanh ve, thanh vien, thanh van
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
qua cac » cua cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((nang xa) or (nang ma)) hoi. hieu qua cac xuc van ((thanh ve) OR (thanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (nang ma)) hoi. hieu qua cac xuc van ((thanh ve) OR (thanh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (nang ma)) hoi. hieu qua cac xuc van ((thanh ve) OR (thanh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (nang ma)) hoi. hieu qua cac xuc van ((thanh ve) OR (thanh va)) cua triet*.