Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dao » lanh dao, thanh dat, thanh dam
van hanh » van thanh, ban hanh, van anh
dao cua » dai cua, day cua, dan cua
van lam » van nam
su sach » so sach, vu sach
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
lam lo » nam lo, lam co, cam lo
lo van » le van, vo van, so van
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vay khach)) ((ky lang) or (ky tang)) xa hoi. hieu van lam lo van hanh dao cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vay khach)) ((ky lang) OR (ky tang)) xa hoi. hieu van lam lo van hanh dao cua tu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vay khach)) ((ky lang) or (ky tang)) xa hoi. hieu van lam lo van hanh dao cua tu*.