Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cau treo » cau theo, cau tren, cau triet
vanh dai » van dai, vanh tai, lanh dao
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
qua cam » qua cham, qua cac, qua ca
tang ma » mang may, tang van
ty tang » tay tang, ty xang, ty hang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty tang ma hoi. hieu qua cam ((xuc va) or (luc va)) vanh dai ((cau treo) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty tang ma hoi. hieu qua cam ((xuc va) OR (luc va)) vanh dai ((cau treo) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty tang ma hoi. hieu qua cam ((xuc va) or (luc va)) vanh dai ((cau treo) or (ve triet))*.