Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, pham thuc, tham thuc
hoc sac » hoc sach, hoc cac, hoc mac
cua tre » cuu tre, cua triet, dua tren
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
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: hoc sac ky ((nang xa) OR (nang ma)) hoi. hieu va cham tuc va thanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky ((nang xa) OR (nang ma)) hoi. hieu va cham tuc va thanh vai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky ((nang xa) OR (nang ma)) hoi. hieu va cham tuc va thanh vai ((cua tre) or (cua te))*".