Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
va hanh » van hanh, va danh, ban hanh
nang ma » tang ma, nang cao, mang may
hai cua » thai cua, dai cua, hoi cua
sang ma » tang ma, sang tao, mang may
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va cam » va cham, va cac, va cao
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: te sach y ((nang ma) or (sang ma)) hoi. hieu va cam duc ((va hanh) or (va thanh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. hieu va cam duc ((va hanh) OR (va thanh)) hai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang ma) or (sang ma)) hoi. hieu va cam duc ((va hanh) or (va thanh)) hai cua te*.