Perhaps you should try some spelling variations:
ha triet » nha triet, va triet, hanh triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
chat huu » pham huu
hieu van » thien van, lieu va, hieu ve
hieu va » lieu va, hieu qua
huu van » cuu van, huu han, luu van
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
lam ha » nam ha, dam ha, lam chat
5 hoi » o hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang ((5 hoi) or (xa hoi)). ((hieu van) or (hieu va)) chat huu van hanh lam ha triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ((5 hoi) OR (xa hoi)). ((hieu van) OR (hieu va)) chat huu van hanh lam ha triet.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ((5 hoi) or (xa hoi)). ((hieu van) or (hieu va)) chat huu van hanh lam ha triet*.