Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
doc sach » hoc sach, toc sach, nuoc sach
xa thanh » va thanh, ha thanh, ta thanh
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cao, va cai
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ly nang ma hoi. hieu ((va cam) or (va cac)) tuc xa thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ly nang ma hoi. hieu ((va cam) OR (va cac)) tuc xa thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: doc sach ly nang ma hoi. hieu ((va cam) or (va cac)) tuc xa thanh dai cua te*.