Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh van
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
tuc ban » thuc ban, truc ban, tu ban
ve cac » va cac, vien cac
thiet » thieu

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 ky dang xa hoi. hieu ve cac tuc ban ((hanh vai) or (hanh tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu ve cac tuc ban ((hanh vai) OR (hanh tai)) va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. hieu ve cac tuc ban ((hanh vai) or (hanh tai)) va thiet*.