Perhaps you should try some spelling variations:
dau thai » dau thau, da thai, dao thai
thai cau » thai cao, toan cau, thai van
cau treo » cau theo, cau tren, cau triet
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cach » va cac
cach tu » cach thuc
va dau » va dao

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 y) or (sach ty)) nang xa hoi. hieu va cach tu va dau thai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach ty)) nang xa hoi. hieu va cach tu va dau thai cau treo.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach ty)) nang xa hoi. hieu va cach tu va dau thai cau treo*.