Perhaps you should try some spelling variations:
te sach » toc sach
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
qua cac » cua cac
lang xa » lang ha, dang xay, lang van
xuc va » duc va, tuc va, luc va
ve cua » le cua, te cua, ve cum
de cua » le cua, te cua, dieu cua

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 ky ((lang xa) or (nang x)) hoi. hieu qua cac xuc va tinh ((ve cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (nang x)) hoi. hieu qua cac xuc va tinh ((ve cua) OR (de cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang xa) or (nang x)) hoi. hieu qua cac xuc va tinh ((ve cua) OR (de cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (nang x)) hoi. hieu qua cac xuc va tinh ((ve cua) OR (de cua)) tre*.