Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh thai » hinh thai, hanh tai, anh thai
phat duc » pham duc, phan duc, phan duoc
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
cua tre » cuu tre, cua triet, dua tren
su sai » su tai, su hai, su dai
sai ky » sac ky
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: su sai ky dang xa hoi. hieu va phat duc van ((hanh thai) OR (nhanh thai)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. hieu va phat duc van ((hanh thai) OR (nhanh thai)) ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky dang xa hoi. hieu va phat duc van ((hanh thai) OR (nhanh thai)) ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu va phat duc van ((hanh thai) OR (nhanh thai)) ((cua tre) or (cua te))*.