Perhaps you should try some spelling variations:
hieu cac » hieu luc, hieu va, hieu van
cac luat » cap luat, cac xuat, cac thuat
luat tuc » luat thue
hanh dai » hanh tai, hanh dao, vanh dai
vu khac » vu kham, vu khanh, bui khac
khac le » khac ve, khac lau
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac le ((nang xa) or (sang ma)) hoi. hieu cac luat tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac le ((nang xa) OR (sang ma)) hoi. hieu cac luat tuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu khac le ((nang xa) or (sang ma)) hoi. hieu cac luat tuc va hanh dai cua tre*.