Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh hanh » xanh hanh, danh thanh, minh thanh
vu kham » vu khanh
cua tre » cua te, cuu tre, dua tren
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
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: tu sach y nang ma hoi. hieu ((ve cam) or (vu kham)) suc manh hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ((ve cam) OR (vu kham)) suc manh hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ((ve cam) or (vu kham)) suc manh hanh va ((cua tre) or (cua triet))*.