Perhaps you should try some spelling variations:
doan tap » toan tap, doan cap, doanh tai
tu sach » thu sach, su sach, te sach
vu cham » vu kham, tu cham, qua cham
tap cua » tap quan, tiep cua
va doan » va doanh, van doan, va dan
va cham » va chat, va tham
luc va » duc va, tuc va, loc va
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
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: tu sach ((y lang) OR (o lang)) xa hoi. hieu ((va cham) or (vu cham)) luc va doan tap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y lang) OR (o lang)) xa hoi. hieu ((va cham) OR (vu cham)) luc va doan tap cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y lang) OR (o lang)) xa hoi. hieu ((va cham) or (vu cham)) luc va doan tap cua te*".