Perhaps you should try some spelling variations:
thai day » thai tay, thai dac, thai doan
sach ky » sac ky, sach kem, sach hay
sach ty » sach tu, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
day dau » day du, day sau, dan dau
su tien » su kien, su hien, tu tieng
dau vi » dau ve, dau va, dat vi
vi su » va su, ve su, ki su

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) OR (sach ty))) or (sach y)) lang xa hoi. hieu ve chat thai day dau vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((((sach ky) OR (sach ty))) OR (sach y)) lang xa hoi. hieu ve chat thai day dau vi su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach ky) OR (sach ty))) or (sach y)) lang xa hoi. hieu ve chat thai day dau vi su tien".
• Adding a wildcard symbol may retrieve word variants: te ((((sach ky) OR (sach ty))) or (sach y)) lang xa hoi. hieu ve chat thai day dau vi su tien*.