Perhaps you should try some spelling variations:
chat tuc » chat xuc, luat tuc, chat huu
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
hanh va » hang va, hanh vi
ma hoi » mai hoi, xa hoi, ma hoa
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 nang ma hoi. hieu ve chat tuc xa ((hanh va) or (hanh tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu ve chat tuc xa ((hanh va) OR (hanh tai)) va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu ve chat tuc xa ((hanh va) or (hanh tai)) va thiet*.