Perhaps you should try some spelling variations:
thanh day » thanh dat, thanh tay, thanh dam
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
duc ban » duc van, dua ban, duc man
day cua » dai cua
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sac ky)) lang xa hoi. hieu va cac ((duc ban) OR (duc tan)) thanh day cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) lang xa hoi. hieu va cac ((duc ban) OR (duc tan)) thanh day cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sac ky)) lang xa hoi. hieu va cac ((duc ban) OR (duc tan)) thanh day cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sac ky)) lang xa hoi. hieu va cac ((duc ban) OR (duc tan)) thanh day cua te*.