Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
cham duc » pham duc, cham soc, phan duc
pham duy » pham duc
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
van hoe » van hoa, van hoc, van hieu
hanh di » hanh vi, hanh de, hang di
cua tuc » cua duc, cua tu, cua thuoc
di cua » dai cua, doi cua, de cua

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 ky lang van hoe. hieu qua ((cham duc) or (pham duy)) van hanh di cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang van hoe. hieu qua ((cham duc) OR (pham duy)) van hanh di cua tuc.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang van hoe. hieu qua ((cham duc) or (pham duy)) van hanh di cua tuc*.