Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
su triet » su viet, su tien, ve triet
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
ang xa » lang xa, mang xa, dang xay
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
doi su » oi su, don su, voi su

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