Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang, thi hanh
cua dang » cua cong, cua ban
nang cac » nang cao, bang cac, hang cac
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cuu tre » cau tren, cau treo
cua dan » cua ban, ca dan
cac tuc » cac toc, cac tu, cac tac
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cua triet, dua tren
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 ty nang ma hoi. thi nang cac tuc ((cua dan) OR (cua dang)) vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. thi nang cac tuc ((cua dan) OR (cua dang)) vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ma hoi. thi nang cac tuc ((cua dan) OR (cua dang)) vi ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. thi nang cac tuc ((cua dan) OR (cua dang)) vi ((cuu tre) or (cua tre))*.