Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
ve tai » te tai, de tai, le tai
di cua » dai cua, doi cua, de cua
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: tu sach y nang xa hoi. hieu ((ve tai) or (va cac)) thuc van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve tai) OR (va cac)) thuc van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve tai) or (va cac)) thuc van hanh di cua te*.