Perhaps you should try some spelling variations:
luat tuc » luat thue
sach kem » hanh kem
tinh da » tinh va, tinh gia, tinh lao
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
hieu va » hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
da cua » dai cua, day cua, dan cua

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 kem) or (sac ky)) nang ma hoi. ((hieu va) OR (lieu va)) luat tuc va tinh da cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach kem) OR (sac ky)) nang ma hoi. ((hieu va) OR (lieu va)) luat tuc va tinh da cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach kem) or (sac ky)) nang ma hoi. ((hieu va) OR (lieu va)) luat tuc va tinh da cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach kem) or (sac ky)) nang ma hoi. ((hieu va) OR (lieu va)) luat tuc va tinh da cua tre*.