Perhaps you should try some spelling variations:
luoc van » luoc can, luoc va, luot van
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
luc van » luu van, duc van, luc va
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai
sai ky » sac ky
de cua » le cua, te cua, dieu cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang xa hoi. ((hieu va) OR (lieu va)) cac ((luc van) or (luoc van)) hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. ((hieu va) OR (lieu va)) cac ((luc van) OR (luoc van)) hanh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang xa hoi. ((hieu va) OR (lieu va)) cac ((luc van) or (luoc van)) hanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. ((hieu va) OR (lieu va)) cac ((luc van) or (luoc van)) hanh de cua tre*.