Perhaps you should try some spelling variations:
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
sach ky » sac ky, sach ty, sach kem
lua tre » cua tre, luy tre, dua tren
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
vi lua » vi luu

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 ky) or (sach y)) ((nang xa) or (sang ma)) hoi. hieu va cam tuc va hanh vi lua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) ((nang xa) OR (sang ma)) hoi. hieu va cam tuc va hanh vi lua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sach y)) ((nang xa) or (sang ma)) hoi. hieu va cam tuc va hanh vi lua tre*.