Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hanh tai » thanh tai, hang tai, han tai
duc manh » suc manh, duc anh, duc minh
hieu van » hieu va, thien van, lieu va
cam duc » cam xuc, cao duc, pham duc
cua tre » cuu tre, cua triet, dua tren
van cam » van nam, van lam, van cau
sach ty » sach y, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
sach tu » sach thu, cach tu, sach uu
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 ty) or (sach tu)) lang xa hoi. hieu van cam duc manh hanh tai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) lang xa hoi. hieu van cam duc manh hanh tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach tu)) lang xa hoi. hieu van cam duc manh hanh tai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) lang xa hoi. hieu van cam duc manh hanh tai ((cua tre) OR (cua te))*.