Perhaps you should try some spelling variations:
thien van » thi van
ban thuoc » dang thuoc, cay thuoc, nam thuoc
sach dao » lanh dao
dao nang » cao nang, da nang, dai nang
xa thanh » va thanh, ha thanh, ta thanh
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
ban tuc » ban tu, ban tum, ban duoc
hai cua » thai cua, hoi cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach dao nang xa hoi. thien van ((ban tuc) OR (ban thuoc)) xa thanh ((hai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach dao nang xa hoi. thien van ((ban tuc) OR (ban thuoc)) xa thanh ((hai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach dao nang xa hoi. thien van ((ban tuc) OR (ban thuoc)) xa thanh ((hai cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach dao nang xa hoi. thien van ((ban tuc) OR (ban thuoc)) xa thanh ((hai cua) or (dai cua)) tre*.