Perhaps you should try some spelling variations:
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
va triet » va thiet, va trien, ve triet
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
hanh xa » hanh ma, hanh xu, canh xa
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thi hanh xa hoi. ((hieu ve) or (thien van)) cam tuc va ((hanh va) or (thanh lap)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi hanh xa hoi. ((hieu ve) OR (thien van)) cam tuc va ((hanh va) OR (thanh lap)) va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thi hanh xa hoi. ((hieu ve) or (thien van)) cam tuc va ((hanh va) or (thanh lap)) va triet*.