Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
vat hanh » vat thanh, van hanh, nhat hanh
cam thuc » am thuc, nam thuc, cam thu
doi cua » dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
ve cam » ve cham, ve cac, va cam
v nang » va nang, vu nang, van nang
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: vu sach v nang xa hoi. hieu ve cam thuc ((((vat hanh) or (van thanh))) or (va hanh)) doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach v nang xa hoi. hieu ve cam thuc ((((vat hanh) OR (van thanh))) OR (va hanh)) doi cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach v nang xa hoi. hieu ve cam thuc ((((vat hanh) or (van thanh))) or (va hanh)) doi cua te*.