Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach, vu sach
hanh xa » hanh va, hanh ma, hanh xu
lam va » nam va, dam va, lam ha

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 thi hanh xa hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) cam tuc van hanh lam va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thi hanh xa hoi. ((((hieu va) OR (hieu qua))) OR (lieu va)) cam tuc van hanh lam va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thi hanh xa hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) cam tuc van hanh lam va trien".
• Adding a wildcard symbol may retrieve word variants: su sach thi hanh xa hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) cam tuc van hanh lam va trien*.