Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
gian cua » gian xu, ban cua
va tinh » may tinh
sach ty » sach y, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach uu
cao suc » cao su, cao duc
ve cao » va cao, ve bao, ve cac
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: thuat ((sach tu) OR (sach ty)) lang xa hoi. hieu ve cao suc ((ban thanh) or (va tinh)) gian cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach tu) OR (sach ty)) lang xa hoi. hieu ve cao suc ((ban thanh) OR (va tinh)) gian cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach tu) OR (sach ty)) lang xa hoi. hieu ve cao suc ((ban thanh) or (va tinh)) gian cua te".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach tu) OR (sach ty)) lang xa hoi. hieu ve cao suc ((ban thanh) or (va tinh)) gian cua te*.