Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
sach thu » sach thue, sach thieu, sach tham
chang xu » chang xue, chao xu, thong xu
duc van » duc va, duc tan, duc manh
sach tu » cach tu, sach ty, sach uu
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
xu hoi » xa hoi, lu hoi, vu hoi
vi cua » vai cua, di cua
cua te » cua tu

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 tu) or (sach thu)) chang xu hoi. hieu ((ve cai) or (va cam)) duc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thu)) chang xu hoi. hieu ((ve cai) OR (va cam)) duc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) or (sach thu)) chang xu hoi. hieu ((ve cai) or (va cam)) duc van hanh vi cua te*.