Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hanh dai » hanh tai, hanh dao, vanh dai
duc manh » suc manh, duc anh, duc minh
sach vu » sach va, sach tu, sach uu
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
vu nang » vuc nang, va nang, vu dang
cua tuc » cua duc, cua thuoc, luat tuc
ma hoi » xa hoi, ma hoa, me hoi
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach vu nang ((ma hoi) or (mai hoi)). hieu ve pham duc manh hanh dai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu nang ((ma hoi) OR (mai hoi)). hieu ve pham duc manh hanh dai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu nang ((ma hoi) or (mai hoi)). hieu ve pham duc manh hanh dai ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: te sach vu nang ((ma hoi) or (mai hoi)). hieu ve pham duc manh hanh dai ((cua tu) OR (cua tuc))*.