Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dao » lanh dao, thanh dat, thanh dam
thuc dan » thuc hanh, hoc dan, thuc vat
hanh dai » hanh tai, vanh dai, thanh dat
vu sach » vu bach, su sach, vu khach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van hai » van ha, van chat, van hanh
sach ty » sach y, sach tu, sach thu
cua te » cua tu
luc va » duc va, tuc va, loc va

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 ty nang xa hoi. hieu van hai ((luc va) or (thuc dan)) ((hanh dai) OR (hanh dao)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. hieu van hai ((luc va) OR (thuc dan)) ((hanh dai) OR (hanh dao)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang xa hoi. hieu van hai ((luc va) or (thuc dan)) ((hanh dai) OR (hanh dao)) cua te*".