Perhaps you should try some spelling variations:
thai cuu » thai cua, tai cuc, thai xu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
van dau » phan dau
thi cuc » tai cuc
va dan » ca dan, va dao, va dau

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 dang xa hoi. hieu ((van dau) or (van dao)) nuoc va dan ((thai cuu) OR (thi cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xa hoi. hieu ((van dau) OR (van dao)) nuoc va dan ((thai cuu) OR (thi cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. hieu ((van dau) or (van dao)) nuoc va dan ((thai cuu) OR (thi cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xa hoi. hieu ((van dau) or (van dao)) nuoc va dan ((thai cuu) OR (thi cuc)) tre*.