Perhaps you should try some spelling variations:
lang hoa » hang hoa, lang ha, nang hoa
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
qua cho » qua co, qua kho, qua chu
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
cho xu » chao xu, choi xu, cho xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang hoa hoc. hieu qua cho xu ((va thanh) or (van hanh)) vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang hoa hoc. hieu qua cho xu ((va thanh) OR (van hanh)) vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang hoa hoc. hieu qua cho xu ((va thanh) or (van hanh)) vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang hoa hoc. hieu qua cho xu ((va thanh) or (van hanh)) vi ((cua tre) OR (cuu tre))*.