Perhaps you should try some spelling variations:
thai cuu » thai cua, tai cuc, thi cuc
dan thai » dang thai, dan thi, dan than
sach ky » sac ky, sach y, sach kem
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
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: tu ((sach ky) or (sach ty)) ((nang xa) OR (nang ma)) hoi. hieu va cac xuc va dan thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) ((nang xa) OR (nang ma)) hoi. hieu va cac xuc va dan thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach ty)) ((nang xa) OR (nang ma)) hoi. hieu va cac xuc va dan thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) ((nang xa) OR (nang ma)) hoi. hieu va cac xuc va dan thai cuu tre*.