Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
dau tren » dau tien, dat tren, dau tieng
cau tren » cu tren, ca tren, cau treo
xa thanh » va thanh, ha thanh, ta thanh
hieu van » hieu va, thien van, lieu va
mai hoi » mai khoi, dai hoi, lai hoi
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
ma hoi » xa hoi, ma hoa, me hoi

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 tang ((ma hoi) or (mai hoi)). hieu van cam tuc xa thanh vai ((cau tren) OR (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ((ma hoi) OR (mai hoi)). hieu van cam tuc xa thanh vai ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ((ma hoi) or (mai hoi)). hieu van cam tuc xa thanh vai ((cau tren) OR (dau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ((ma hoi) or (mai hoi)). hieu van cam tuc xa thanh vai ((cau tren) OR (dau tren))*.