Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
cua viet » ca viet, hoa viet, cua dieu
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
hang ca » hang va, nang cao, hang tai
xuc va » duc va, tuc va, luc va
ca hoi » cau hoi, cua hoi, xa hoi

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 hang ca hoi. hieu ve cham xuc va ((hanh tai) or (hanh vi)) ((cua viet) OR (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi hang ca hoi. hieu ve cham xuc va ((hanh tai) OR (hanh vi)) ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thi hang ca hoi. hieu ve cham xuc va ((hanh tai) or (hanh vi)) ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: tu sach thi hang ca hoi. hieu ve cham xuc va ((hanh tai) or (hanh vi)) ((cua viet) OR (cua vat))*.