Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh dao » lanh dao, thanh dat, thanh dam
vu sach » vu bach, su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
dao cua » dai cua, day cua, dan cua
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vay khach)) ky lang xa hoi. hieu ((van lam) OR (van nam)) vo van hanh dao cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vay khach)) ky lang xa hoi. hieu ((van lam) OR (van nam)) vo van hanh dao cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vay khach)) ky lang xa hoi. hieu ((van lam) OR (van nam)) vo van hanh dao cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vay khach)) ky lang xa hoi. hieu ((van lam) OR (van nam)) vo van hanh dao cua tuc*.