Perhaps you should try some spelling variations:
dao nang » da nang, dai nang, dao nung
cao nang » cao dang, cam nang, cao tang
tu sach » thu sach, su sach, te sach
dan dai » dat dai, can dai, dan dat
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
luc va » duc va, tuc va, loc va
va dan » ca dan, va dao, va dau
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 ((dao nang) OR (cao nang)) xa hoi. hieu ((ve cham) or (ve chat)) luc va dan dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((dao nang) OR (cao nang)) xa hoi. hieu ((ve cham) OR (ve chat)) luc va dan dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((dao nang) OR (cao nang)) xa hoi. hieu ((ve cham) or (ve chat)) luc va dan dai cua te*".