Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ma hoi. thi van cam ((duc va) or (thuc vat)) ((hanh vai) OR (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. thi van cam ((duc va) OR (thuc vat)) ((hanh vai) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. thi van cam ((duc va) or (thuc vat)) ((hanh vai) OR (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. thi van cam ((duc va) or (thuc vat)) ((hanh vai) OR (hanh tai)) cua tre*.