Perhaps you should try some spelling variations:
anh thanh » danh thanh, nhanh thanh, thanh thanh
nang hoc » nang doc, nang luc, dong hoc
anh hanh » xanh hanh, anh anh, anh danh
thai cua » than cua, tai cuc, tri cua
sach ky » sac ky, sach ty, sach kem
hoc hoi » hoc khoi, hoc hoa, hoc noi
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, cua triet

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) or (sach y)) nang hoc hoi. hieu va cac duc ((anh hanh) OR (anh thanh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang hoc hoi. hieu va cac duc ((anh hanh) OR (anh thanh)) thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) nang hoc hoi. hieu va cac duc ((anh hanh) OR (anh thanh)) thai cua tre*".