Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
cua duc » cua nuoc, cua quoc
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
cua tuc » cua tu, cua thuoc, luat tuc
ve cam » ve cham, ve cac, va cam

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 ((nang ma) or (sang ma)) hoi. hieu ve cam xuc van thanh vi ((cua duc) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang ma) OR (sang ma)) hoi. hieu ve cam xuc van thanh vi ((cua duc) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang ma) or (sang ma)) hoi. hieu ve cam xuc van thanh vi ((cua duc) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang ma) or (sang ma)) hoi. hieu ve cam xuc van thanh vi ((cua duc) OR (cua tuc))*.