Perhaps you should try some spelling variations:
sinh cuc » sinh cua, sinh duoc, dinh chuc
cuc nang » chuc nang, cuu nang, cua nang
va cam » va cham, va cao, va cai
nang o » nang co, nang ho, nang ro
luc va » duc va, tuc va, loc va
va dan » ca dan, va dao, va dau
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh cuc nang o hai. hieu ((va cam) or (va cac)) luc va dan ((di cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh cuc nang o hai. hieu ((va cam) OR (va cac)) luc va dan ((di cua) OR (de cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh cuc nang o hai. hieu ((va cam) or (va cac)) luc va dan ((di cua) OR (de cua)) tre".
• Adding a wildcard symbol may retrieve word variants: hoc sinh cuc nang o hai. hieu ((va cam) or (va cac)) luc va dan ((di cua) OR (de cua)) tre*.